The value is in building your experience not in repeating it.
Hear Hear!
And, phrased another way, you can have 1000 hours, or an hour a thousand times.
As for the original question, I don't think that the number is as important as how the members get along, and share the airplane. I don't think that having a number of members as a planning or decision tool should be the basis of the decision. What I do think is important is to have at least one member who is very experienced in care and feeding of airplanes, whom the more junior members are content to take advice from. Having a bunch of newbies collaborating on the maintenance of a legacy GA airplane is less than ideal.