You know it sounds like your using what you have, which is what I would do as well. I think I would consider tying it as well. Machine quilting could be really hard on your sewing machine. My sisters sewing machine was never the same after she sewed a canvas tipi on it. Just thought I'd let you know. If you tie itusea surgeons knot like others have suggested.
By the way......welcome to the quilting board!