Why bother finishing the basement at all? I just slapped some rustoleum epoxyshield on the floor, some UGL drylock on the walls, then finished the walls off with a rich purple paint which my wife selected. Looks great. I even kept the 2 X 10 ceiling exposed. I've got a 4.5 X 9' diamond pro table right next to a valley bar box. It's hog heaven. And cheap too. Why waste the money? I play to retire early.
Oh yeah, I've got 4 poles as well. No problem, even though a couple do effect certain shots (though they come up much less than you would expect and no one complains - and I host up to 8 players at one time down there). PM me and I can supply pics.
Cheers and good luck.