Here's a brief guideline on what the players can do as far as covenant building. There's a few things set in stone, but beyond that, it's mostly up to you guys. Have at it.
Each player can contribute [strike]350[/strike][strike]250[/strike] [strike]291[/strike] 335 build points worth of stuff. In addition, the magi can bring up to 75 build points of their own personal equipment, texts, people, etcetera – either for their own use or as largesse. There is no level limit on lab texts or effect level in enchanted devices. This makes the covenant a "High" Power Level.
Laboratories: There are seven laboratories already built (including the one on Eilean Chon)
Library: Due to the pillaging of the library by Duncan, Art Summae have a level limit of 15 instead of 20, and a Quality Limit of 17 instead of 22 (in the formula on p. 71 of the core rulebook).
Ability summae have a Level Limit of 6, and Quality formula modified as above.
Vis: The covenant's sole remaining Vis source is the eggs of the Loch Ness Monster, which are harvested every year. Any other Vis Sources may be purchased but must be "discovered" in play.
[u]Boons, Hooks, and Free Choices[/u]
- Aura: The smaller island has a Magic Aura of 6. The rest of the covenant has a Magic Aura of 3. By the book, that appears to be three Major Site Boons, but that seems counter-intuitive, as it's a very small portion of the covenant that's affected.
- Poverty: With the magi's neglect in recent years, the covenfolk and inhabitants of the surrounding area have gradually drifted away. The infrastructure is still there, but there is definitely room for improvement and rebuilding.
- Residents: Peasants: Most of the people in and around the covenant are either shepherds, fishermen, or something related.
The larger island is called Eilean Muireach, the smaller is Eilean Chon
I'll try to cobble together a rough map-ish looking thing soon.
(Edit to correct number of build points for each player to provide.)