I'll be more negative than robin. If you really want to form a syndicate then the way you are going about it is hard.
No one wants to put the moeny up - after all there is no aircraft. And when you find one, you can nearly guarantee that one of more of the wholly committed and very keen types (often the most enthusiastic) will object to the colour / condition / equipment / whatever and decline to put their hand in their pockets!
The most straight forward way is buy the aircraft and then form a group around it.
Make sure you all like each other - all it takes in most groups is a single individual with the wrong attitude and it gets to be very hard work.
Best of luck and remember the rules of any group whilst useful are always less important than your judgement on the individuals.