sorry 6 cycles, 42 years. Call me dylsexic.
The general concept sounds good. I'm not sure about the Warg familiar, though. A wolf familiar is no problem at all, even a big wolf familiar. But one big enough to ride ... that might be pushing it.
I'm unfamiliar with that.
Anyone else know the answer?
Answer: I've intentionally made things a bit vague to allow some flexibility. My intention of the BPs is to allow you to either get stuff early or save up for a later covenant on New Atlantis. So, if you want to use those BPs to get something like a 100 MP ship, I'm good with that.
In answer to your addendum, I'd say that the 10 MP from an adventure is meant to be a bonus in pure cash, usable, savable, etc. The 10 BP can be used for books, items, etc. But if you use it during development you can't use it to get cash or vis. In other words, you can use it to get a 100 MP ship, but not 100 mythic pounds in silver.
6 cycles.
Vis remains, less what you may have spent along the way.
I was thinking that there ought to be a discount on how much cash you have, since the money per year is your income, and no one saves 100% of their income. Granted, your living expenses are covered, so this is all excess. And that may be the way to think about it. The 3 MP/year represents your 'excess' income for the year. In the end, I don't want silver to be a big hindrance. You'll be potentially mixing with the highest levels of society. You should be able to hold your own. Granted, a king will always be able to outspend you. But you shouldn't look like a pauper next to him.
You can absolutely buy normal things without using your skilled tradesman. It'll be 'normal' gear. But sure, buy whatever carts, horses, houses, etc. that you want.
If you want to use it during character generation, you obviously have to define it. But if you want it to be used for a later covenant, you can leave it undefined. It may even represent a promise of help for when you set up a new covenant rather than actual stuff.
You can certainly buy magical items any time you go to tribunal.
I suppose there's also no reason to think that you couldn't arrange for a commission as well. The Verditus gain a lot of vis for these commissions. They should be able to arrange for free two-day shipping as well. 
I'll let the other players answer that one. I've kept Magnus away from that area so as not to step on player toes.
Just keep it to a reasonable number of grogs. A lab assistant, shield grog, and trusted aide are not too much. And miscellaneous servants and families just go along with all that. You shouldn't have an entire covenant of you own. But having a 6-cycle magus have a handful of servants is not unreasonable.
I guess my real question is this: If I were to sell charged items at tribunal, how much could I sell them for? Do you think people would be willing to pay 1 vis per 10 levels of item?
The idea is to run a "consignment" booth where people can sell their excess charged items. In reality, Haestus is using his Craft Magic virtue to make custom charged items on demand. He'll gladly take a real consignment for, say, 1/2 a MP per item, but his bread and butter is when someone asks about an item, a few days later "someone just happened to bring one by".
He is engaging in this slight subterfuge to protect his tradition and what it can do.
I don't think there is a RAW because charged items can be sold for silver instead of vis. They can even be sold to mundanes.
I just looked at the initial character at gauntlet. And if you're taking a minor magical focus in wolves, I'm much more willing to allow an uber-wolf as a familiar.
Woo! There is always the choice of MuAn too.
Two Questions: How are we doing affinity in abilities - Are we rounding up or down, or not rounding at all? Rounding up seems to be the general way to do things, but the book does not in fact specify any rounding at all for affinity with an ability, so arguably that's the way to go. But halves are hard math and rounding up has potential for weirdness with exposure xp and correspondences, so there is a good argument for rounding down too.
Secondly how are we doing warping? If I hold off on a longevity ritual will that help any? Or will we just do the silly 2/year?
As annoying as it is, I've always assumed no rounding and carry the halves. There's a lot of math in ArM5. A few halves shouldn't add to that too much.
I've been giving that some thought. Clearly whenever you have a longevity ritual, you're getting 1 WP/year. But there are also builds (like Magnus' and Artemis') that tend to minimize WPs. For example, if you have Cautious Sorcerer or a high Gold Cord, it seems reasonable to me that you'd get WPs less frequently. Likewise, if you have Careless Sorcerer, it's likely that you'll get more.
I'm inclined to use 1 WP/year in general, plus 1 WP /year for a LR as a base accumulation rate, with modifiers to that up and down depending upon Flaws, Virtues, and Gold Cord.
shouldn't that depend on what you are doing? I mean it seems silly to get a warping point sitting around reading, and labs do not contribute to warping unless you expiriment...
Also since we are by fiat all 42 years past our gauntlet, that is a lot of automatic warping...
Eh, you'll have the occasional action or spellcasting and twilight gives you a big burst of warping. I think its reasonable. I was mainly thinking of the longevity warping when I said "silly".
I think QPaC has the right of the theory behind gaining Warping points beyond what you'd get from your LR. It's assumed that as a maga you cast spells and that occasionally your spells go wrong, granting you WPs. So, even if you're just sitting around reading and not doing a lab activity that can accumulate WPs, there are other ways to get them.
I'm curious that you didn't raise these concerns in Ad Astera, though, since you used the 2 WP/year accumulation without comment there.
In any case, I'm happy to go along with what the troupe thinks is fair on this one.
So how are companions/grogs supposed to be developed? Are they assumed to be at the same covenant as our characters? Do they have access to the same books?
Grogs should just be made up according to the normal rules. People can make up what grogs they think are appropriate, but shouldn't go overboard. I imagine that most grogs will be associated with a covenant that a magus/maga is at.
I was thinking companions probably ought to be made up according to the basic companion generation rules rather than season-by-season, since otherwise it would take just too darn long.
I'll post a few grogs I'm running up in a new thread.
Two questions: First question: I assume only people who did NOT write the letters in a correspondance can read the tractus. The writers already benefited. Am I right?
Second, question: Can magic theory be taught via training? For example if you're refining a lab or installing virtues can you train your familiar at the same time? What about actual lab work, when the familiar isn't assisting? Technically, maybe, the magus isn't making a living, but that's really only because no one is paying them. Its their whole career.
Any ideas for coming up with daimons that are not in the mysteries book?
Well, there are all the Greek gods, Celtic gods, faeries of note ...
We could also make up an Atlantean pantheon (or just use the Greek ones).