No I have no long arm yet. Currently I use a Janome 6500 to free motion and that has an extended bed. It is a crunch but I push everything through it including calking sized quilts. Roll thight and then reroll and do blocks at a time. The border you can go all the way around as long as you posisting the bulk away from the arm of the machine.
I am sure there is a way for you to cover the feed dogs and use your current machine. Maybe some one on the board can help you. I think you can tape template plastic over it and punch a hole for the needle but I haven't done it yet. I say yet because I am looking at something similar for my antique machines. Sometimes you can find an after market cover plate.