Bonsai & Patience
I've seen on this forum people asking: Which is the tree that would grow faster as a bonsai and the one true answer is: Bonsai is an art of patience so you shouln't look for the one that grows faster but for the tree specie you feel must passionate about. Why? How?
I wrotte an article on the subject which you can read on the link below.
Here is a link that might be useful: Bonsai & Patience