Since you want a durable quilt, and intend to quilt it on your domestic machine, I'd be tempted to do some stitch in the ditch type of pattern that travels across the quilt from side to side and top to bottom. Depending on the distance between quilting that your batting requires you may need/want to add more lines between the stitch in the ditch ones. Alternatively you could stitch in the ditch in the "bricks" and do a diagonal/diamond type shape on the panel. Please post what you decide to do. Lovely top