Looks like a BCI, normal boa constrictor.

Understand that you run the risk of "ending up with a 10 foot snake" any time you get into a boa. Even the smaller localities can sometimes grow large. BCI can get up to 10 feet in some circumstances - I've seen them. Boas are large, powerful snakes, so just be prepared.

With that said, BCI typically stay around the 6-8 foot mark - and if you get one as a baby and let it grow with you, you'll know it's temper and when you can play and when you should leave it be for a day or two Good luck!