Don't confuse me Brat, that is way to much thinking ahead of the game.
April, if a longarmer has a 12' table they have approximately 130" good quilting space. It would seem pretty strange to me if you made a quilt over that in both directions. But, there are those longarmers who have 14' tables so they can accomodate you with no worries. So have fun tumbling away there girl.