LOL sorry McKinsey....Monday brain fart...more coffee quick somebody!
Personally I like to start little boas just like little BP's...in a baby tub on plain white paper towels, a water dish and a couple of hides. Anything too huge right away can I think intimidate any snake so if you go the route of a nice new little boa, I'd stick with a small plain tub and hold off on anything too big till it gets some size on it and is settling in really well for you.
On thing with boas and tubs. Even more than BP's I've found that boas like to test their enclosure and boy they are strong snakes. Make sure that the lid on any tub you use is as secure as you can make it. Basically my rule of thumb with a tub and a boa is if it looks good to go for a ball python....add more security LOL.
Just my thoughts.