There are several facebook groups, "brazilian rainbow boa" "Rainbow Boa Appreciation" and "Rainbow boa classifieds", all have some really good people to deal with in them.

88f is really a bit high for brazilians, most of the time you'll see about 82 for a hot spot recommended, a lot of the guys I know don't even go over 85 for gravid females. Get a cage set up with minimal air flow through it and keep your humidity up and they're no big deal to keep.