You've chosen some nice ones yourself. Carpets are generally really nice and docile as adults but can be nippy as babies (same goes for RTBs and rainbow boas). Bloods can be bitey as babies too, but can also be rather unpredictable, though if you bring them up with regular handling they tame right up. You also mentioned that you wanted to stay under the 10' range, and I'm warning you now that a female Columbian RTB and a female Coastal Carpet can achieve ten feet at full size.
You're going to need to watch out because all of those guys have wicked feeding responses hahaso hook training is something I'd suggest, especially with the boas. The good thing about the red tails and carpets is that you can get smaller ones based on locality, so you can get even more size options within them. I'd suggest either a red tail boa or a carpet python, but that's just my taste. You can't lose with any of the ones you picked out.