Hi QuiltnCowgirl,
Very nice quilt. I like the blue colors. I would do straight stitch quilting. I would quilt 1/4 away from each seam line on each side of the seam line. I would use a variegated thread that had most of the blue colors that are in your quilt.
I liked one person's suggestion of diagonal lines and this might work for a larger quilt. But, for this size quilt I think I would do as I suggested above.
I like the look of hand quilting and I've noticed that they do not STID but rather stitch away from the seam lines. I've come to like the look of this quilting very much. It also will ensure the quilt to last through years of use. The straight stitching will be easy with the machine that you have to use.
Pam M