You might be able to get a generic walking foot that isn't too expensive. I've seen them under $20. I am planning on doing just the tops during the summer because it's too hot here in FL to be under it quilting. Once it starts cooling off again, I'll do the quilting on the larger ones. Baby quilts or small things I'll still go ahead and quilt.
Start with stitch in the ditch or 1/4" away from the seams and work yourself up to the free motion. The more you do, the more comfortable you get with it. :)