Ive had MANY boas in my past and recently just bought 3 more to get back into them. They are Big puppies when well cared for. Their just as docile as Balls if not more at times. They are strong compared to BPs, so having adults on your neck alone is not advised.
As for requirements most start off is 6qt tubs and work up from there to about 74 quarts for adult females. Some may even need larger tubs designed specifically for larger boas.
I keep my boas at
78-80 Cool side
91 Warm side
60% humidity
Feeding is done slower than Balls as Red tails do have a tendency of regurgitating when younger if fed too fast and too big of meals. I personally feed smaller prey items to NOT see a bulge in them.
Hope this helps