Some enquiries I made this week were on a similar topic.
You don't need a PT CofA if you own the plane or part own it, the student pilot issue is with the insurance, usually 1 per group as someone said above.
1 thing that strikes me here though, if money is an issue so much is buying into a potential bottomless pit right for you?
Another thing I think MikeAlphaBravo maybe someone I know in a disguise
, if it is him and it is the plane i'm thinking of then it is a real tidy machine and it would have been sold to me if I wasn't so fat.
Best regards
Ben