Hey there! I have a couple of these guys and they are one of my favorite species. They are the smallest of the dwarf boas. Adults are usually around the size of a ball python female (remembering that boas don't get as fat as BP). Temperament with my two has been that of any BCI, maybe a little hissy/strikey in the cage once in a while, but mostly fine once they're out. As with all boas, feeding time is another story. The best part about this species is that they are SLOW growing, and you definitely should not power feed to rush them. Take advantage of not having to upsize caging constantly and having a perpetually adorable "baby" boa!
I received my pair from Stephen at Scaly Babies and have no issue with recommending him. Vin Russo of Cutting Edge Herp is a very reputable person as well, but I'm sure other people will be along with more recommendations.