Erm, yes, there is, quite clearly.
Okay, a moment while I walk through this, so everyone's on the same page (me included.)
A dedicated (ie, "large") character could, with specializations, easily have an effective MT of 10, and a Phil of, say, 8, for a product of 80 Vim vis(!). That same character would be hard pressed to have a 40/40 Te/Fo mix, which is usually(?) "archmage" territory, above and beyond simply "large". (And, no, I don't want to argue terms or possibilities. By the rules guidelines and without virtues it would require a character to be of mundane age ~50 to achieve the Abilities, but Hermetic age 120 for the Arts - that's disparate enough.)
[i]( See Erik's comment above re "half a queen of vis lying around", multiply that by 8/5, and the limit of it all being Vim vis!)[/i]
Now, to your question...
Yes, it would be. (Why am I reminded of Baldric, who's secret dream was to have a huge turnip in the country...) Anyway, since you seem keen on doing so, we likewise shall ignore that detail.
The rules state that the first step in a Tali is to "Prepare it for Enchantment", as one would for any Invested item. They don't say at this stage ~how~ that needs be done (the standard rules are presented, which by default are no greater than the special rules for a talisman, below), so, at this stage, the sky's the limit (and you're pretty close to breaking the Lunar limit, bucko!)
However, for Talismans, the rules state, explicitly (p 98, first column, bottom),...[b]"...The maximum number of pawns of Vim vis that can be used to prepare a talisman is equal to the sum of the magus' highest Technique and highest Form..."[/b]
So, unless the rules for Elder Runes specifically address and include talsimans*, the limit isn't the generic preparation, it's the Talisman preparation. That is, you can prepare items to MTxPhil to your heart's content, but if it breaks the rules for a Talisman (highest Te x highest Fo), it can't become a Talisman.
(* If the phrase you used above, "These additional materials must fit within the other guidelines" is from those rules, you're definitely SOL, sorry.)
Best bet is to prepare more than one item in one season, one of those items being the Talsiman, and be grateful for the seasons saved.
Otoh, if your Saga is such (as you imply) that you found a lump of ~150 Vim vis lying around (and no, I don't want to know), then ignoring the rules and having a Talisman much, MUCH bigger than Te x Fo may be in line with that. I won't tell you how to have fun, only what the RAW have referring to your question.