I had the same issue
I bought a Diamond 9' pro am and put it in the basement which has three bad areas to shoot from due to suport poles and a built in shelf over sump pumps. Honestly, these three areas rarely come into play and do not decide the final outcome of the game 99% of the time. I do not regret getting the big table because I have always wanted a Diamond and a big table. I found a deal I could not pass up on the table and decided to live with the small room size. I do not plan on staying in this house for the rest of my life, but, do plan on keeping the table..unless, somebody makes an offer for it I can't refuse lol, and will buy the next house with a room for the table as a deciding factor. If you want a 9', get the 9'. You will never regret it if you end up with the table you are happy with. I have never thought twice about what I paid or second guessed my decision even with the bad spots.
Just a quick "Hello" to all the local to me AZers