To be honest, FMQ in a swirly, improv design is a lot easier than trying to keep lines straight and even on a very large quilt-- at least that's my experience. I'll second the suggestions for machinger type gloves, a supreme slider, and support for the weight of the quilt. I use an ironing board lowered to machine table height on the left, and a folding table behind the machine. Sometimes I even get some tv trays with a board on top back there too-- don't want any drag distorting your stitching lines.