I just have a Pfaff tiptronic 2030 and have machine quilted queen sized quilts on it by rolling the sides. You have to be careful but you can do it.
I am still working at free-motion quilting with it, but am getting better. A stitch regulater would be great. That's the biggest challenge is keeping the stitches uniform. When I have studied some of the quilts hanging up in the shops, the free-motion stitches aren't all uniform, so maybe I am trying to be too perfect with them.