Once you begin free motion quilting with your table top machine, you quickly understand that working with a frame and moving the machine would be a lot easier.
Then, you do what I did, and you find out ... a regular sized sewing machine on a fabulous frame is not as good as having a bigger machine, more throat space, and more surface to be reached at a time.
Something one of my friends did for me was to allow me to work on her quilting machine for a bit to see if it was indeed what I would want. As Dizzy said ... when you realize the possibilities beyond what you are doing right now, the basic set up won't allow you to make the money you could with more space.