Do you have a sense if you want swirly or angular? I just went through my designs (some of which I have purchased). For swirls, I might go for Anne Brights Denali, Anne Brights Elegance on a string or maybe Intellegent quilting Wrap it up. I have used Intelligent Quilting Axis a lot - stitches out great but not sure how it would look on the squares. There is always the HQ Wrenchworks - it should be under HQ designs in the preloaded. It might look just fine and without any additional cost!!

Thank you Betty! I looked these designs up, and I like them if I go with something swirly, especially Elegance on a String and Wrap it Up. Wrap it Up looks like a great design if you want your quilting to show.

Keep in mind: upholstery fabric and King size will weigh a and you will probably only use it for decoration, not to sleep under.

I agree - I might not put a batting in it depending on the weight of the fabric.