My thought on the schedule for this game is that if it's five tests, that will take five weeks; if it turns out to be six tests (just because of the creative gusto that's been building it looks like that'll be easy to mangage), then it will be six weeks.
This is going to be sort of like werewolf in on-task posting, more than once per day. Not the same level of intensity as werewolf - I can't imagine anybody doing that for six straight weeks.

But it'll be a bit more on-task than a typical rpg, with a strict deadline so that you can count on when this is done.
I want us to be able to enjoy our vacations and holidays without distraction from this, and vice versa.

So we won't start this until the week following American Thanksgiving, at the earliest. And then I expect us to take time off for both Christmas and New Year's, such that this will probably finish up in mid to late January.
Thanksgiving is on a Thursday, Christmas and New Year's both on Sunday. So:
Start (if we're ready): Monday November 28; each test/week ends on the following Sunday night. This is subject to everyone's readiness.
Christmas to New Year's off days: Friday Dec. 23 - Tuesday Jan 3.
We can even interrupt this in the middle of a "test", but we don't have to. I'm flexible.
So I'm looking at just taking a long break for the holiday, with everybody ready to bounce back to it Wed. January 4. Seem like a good plan?