I finally decided on quilting this in the orange peel style, I just finished marking and basting it today. I think I am going to do straight lines in the borders, just to add a little contrast. I had to piece the back, I didn't buy quite enough fabric for it, and very pleased with the results.
I also took the time to get used to how my new machine quilts on a very old UFO, so I won't have nearly as much of a learning curve when I get it on the machine!