I ended up going with invisible thread in a crosshatch about 6" apart. It looks awesome. the back is also pieced, so this complemented that as well. Lots of great suggestions here that I will keep in my back pocket for future endeavors. When I get the binding finished (should be this weekend) I will post pictures of the finished product, front and back. I know intellectually that my grandson will love it, but I still hope he likes it :lol