its really worth the effort to find a good room for a table, it is useless in a room thats too small, I have also found that a good pool room helps sell the house, I was suprised its usually master bedroom, her closet and kitchen in that order, a pool room is right under that-more so that a pool in some cases!!,
I did buy a 17,000 sqft house once that only had room in one area for a table-it sucked so bad I couldnt stand it, I never moved into it and sold it 2 years later, I broke even. I wasnt playing much then either but for me it will awalys be a priority in any house(dont have a box in my 2nd home

). In my current house my pool room is the best I have ever had and I use it more because it feels so good, I really got lucky it came out as nice as it did, I was very suprised, I did it as a tempoary thing until my house was finished, it came out so good i'm not moving it. I'm very critical of what I have, I dont like much of what I have. I'm a perfectionest and my room is just that.
hope this helped, sorry for bragging about my room but i cant help it
one last thing if the table is too big for the room, you just wont find yourself in there as much as you might think, unless you just totally dont care about playing good, which is ok for some but not dedicated players and the room will never feel welcomming just crowded. I would get a 7' table if a 9' wouldnt work. I dont like 8' boxes much-personal preferance. When ever the table is too big the room just isnt comfortable, its the zone thing I believe, like when someone stands to close it feels weird, same thing with a table thats too big just in a lesser way it isnt comforatble to be in a room like that, this applies to all furnishings, the scale of what you put in a room has to fit the room to make it pleasant to be in. I'm not making this up, I have read alot about over the years and ecperienced it too, as I have lived in all sizes of homes, just like if the bed is too big-it dosent feel as good.