emilsmee and treegirl,
BRB are actually quite manageable snakes. Most babies can be nippy, but with regfular handling they are quite easy to calm down. I would consider aggressive adults to be more of the exception. Even if they aren't handled a lot as adults, if they had a decent base for handling as babies, they should remain docile. Although the humidity and temperature requirements are quite specific, they are very easy to keep as long as they are setup right in the beginning. This is from both my own experiences working with these snakes, as well as reputable breeders of these beautiful snakes. Although they get around 5-7 feet in length, they are quite slender and seem nowhere near that size. Males typically stay around 5 or so feet.