I had a female BCI that grew over 7.5' that I typically fed medium rats to. She got bigger than I really wanted, but I never planned to have her, she was a homeless
rescue that needed help, & me, just a softie that couldn't say "no". Had I planned to have a boa, a male BCI would have stayed smaller & been my preference. BCI's
are common but great pets...easy to feed. When I gave her a large rat once, she didn't regurge it but I feared she might...she was obviously uncomfortable, so I never
fed her larges again. Just remember that many people over-feed their boas...doesn't mean you have to.