This is a fabulous forum for corn snakes!

http://www.cornsnakes.com/forums/index.php

Actually, I think compared to BPs, colubrids (and specifically corns) are "easier" to care for. They are much more forgiving to lower temperatures and whatnot, and eat mice -- typically take very well to f/t. In fact, it is advised, and most are only ever fed f/t.

I would definitely NOT house colubrids together. Some have been known to be cannibalistic!! :S Which is where pet stores can have problems. I think they house the snakes together to save space. The problem is, not only is there a cannibalistic possibilities, but the snakes are competing for resources (heat, hides) and are stressed out. Some people do house them together... but I wouldn't. If there is a regurge, you wouldn't know who's it was.

Definitely check out a few books, talk to some breeders, etc. Good luck!