Your quilt sandwich looks thin enough that the wide blanket binding might work. The hardest parts would be sewing it on without the binding rippling, catching both the underneath and the top parts in your machine stitching, and keeping the stitching an even distance from the binding edge. You really want to use a walking foot for this if you have one. Also, could you make up a test sample for yourself before tackling the quilt? That would help you figure out stitch length (you probably want it a little longer than usual), how close together you want to pin, etc.