We would highly reccomend against housing multiple snakes together due to the difficulties it introduces in maintaining good husbandry. Potential cannibalism is probably something you wouldn't want to deal with either.
Were you meaning you planned on housing the boa with one (or more) of the BPs?Quote:
I think I'm gonna switch him and my baby ball around. The boa is in a 40 breader as are the two big balls( I just love saying that ) and my baby ball is in a 20 long