I don't have your particular machine, but after looking at this
link, I can tell you that a machine that has a wider base between needle and motor makes a HUGE difference. Specialty quilt stitches are a must. What I don't see on this list is the common feet needed for quilting. Before buying the machine, check with a couple of folks who fix sewing machines. Find out the ups and downs with that. Paying less for a machine that requires more expensive regular maintenance can be a real problem on a limited income.
One feature this machine has that my Bernina 440 QE does not is a Vertical thread delivery system, which is helpful when using cones.