Sounds like we're in the same boat. I've been researching for awhile now and looking to get my 1st BOA. I have a vacant 4 x 2 x 15" enclosure and I've had several breeders say this should be fine for a male BCI and or smaller Boa. According to Vin Russo's Boa Book, he likes to keep adult boas in a 5-6 foot long enclosure while keeping dwarfs and island boas in a 3-4 foot enclosure. I really don't want to have to purchase a larger enclosure
As for Hog Islands, these BOAs have been on the top of my list but finding available pure breds have been as difficult as finding a needle in the haystack. I may just end up with a male BCI if I can't find any Hogs.