Well we do have a 9 foot female BCI in the house and we do love having her.Granted we adopted her as an adult but she was so well cared for and socialized that she's a dream to handle. You do have to be smart though with a snake that powerful. You forget for one minute that this is a creature of pure muscle and instinct, you can get schooled. Just remember to respect what she is and what she isn't.
We have Tequila housed in a custom enclosure we created from a solid walled interior closet in our livingroom. It allows her over 6 x 3.5 of floor space and 9 vertical feet of climbing height. She has a natural barked tree in there to assist her in climbing to her basking shelf which is just over 5 feet off the floor. However, she can reach that shelf without using her tree. It's pretty amazing to watch a snake that large basically stand on her tail, then do a chin up that would make a marine jealous.
Best advice, get your female from a great breeder especially if you are investing in a het (Jimi would be my first pick too). Get her young and raise her right. Socialize but don't over stress. Plan for her future so she won't end up another big snake without a home. Jamie Glass was kind enough to take Tequila in when she became in need and then fostered her for years until we adopted her from him but a lot of these bigger snakes are VERY hard to place at maturity.