My point is this. When one first becomes interested in exotics, you need to do the research BEFORE you bring them home, not after. I have taken in too many sick and dying exotics that were brought home by folks with good intentions but a "ready, shoot, aim" approach to animal husbandry. These have included both balls and boas (add parrots and dogs as well). Perhaps that is why i don't demonstrate much patience for poor husbandry.
Both are solitary animals, Boas have a tremendous feeding response and if you ever saw a really hungry or jazzed up boa hit a rat I would think you would have second thoughts of ever housing it with another snake. There are caresheets for both listed here....read them. Ask your breeder, the pet store etc...