Do you have room to do half the quilt? You could set up one side, sew it, then set up the other side.
I am also toying with the idea of a flannel backed tablecloth and a a clothes line. Before I got my design wall, I used the bed as well. However, when a quilt is on point, it is still hard to make sure the blocks are in the right order.
Good luck! You can do it!