Great, looks like you have a way better pool to select from than last year.
Here's what "membershipping" was like at our co-op, if you want any ideas:
People who wanted to live there had to
- attend (I think 3) meals.
- do some chores
- undergo about an hour-long interview that included questions like:
If someone on your floor keeps using your shampoo, how would you deal with it?
If the person who is supposed to help you wash dishes blows it off, what would you do?
If you bring over a friend and another housemate objects to that friend, what would you do?
Etc.
Sincerely hoping that your next housemate is a good 'un...