I have a room that MAY serve as a site for a pool table, but it might be tight. Dimensions: 15' 7" X 15; 3" . Am I correct in assuming an 8' table refers to the playing surface? If that is the case, roughly how many inches (average) should I add for the frame dimensions surrounding the playing surface? Those who comment; please give me your assessment of the comfort/aggravation level associated with playing in a room of this size. I would hate to move down to a 7' table............