I would echo quilt around the embroidery and grid the background behing the embroidery. Those blocks need quilting regardless of what the batting may say. Perhaps a simple design in the sashing and grid the borders.
I don't think a boy's quilt needs a loty of fancy quilting unless you just want to do it. The simpler the better is my choice but sufficient qulting to give a uniform amount of quilting throughout for wear, stability etc etc.