I'm afraid I agree with PaperPrincess about the 10' machine not being usable in your space. I only quilt from the front of the machine (rulers and free motion) but I still need to be behind the machine for various reasons, so I would hate to have it shoved up against a wall. I have a saddle stool and have not found it very useful for me, but you might enjoy it. I would recommend trying one out before you purchase a longarm. Be sure to test drive the Innova. It is lighter and easier to move than most longarms, and that would be a consideration with your back problems.