I also love your quilt. I would add a border or two if you want to. It's all personal preference. Lay some fabric out, folded like they were borders, and see what you think. I tend to like a narrow inner border, say 2 inches, and a wider outer order, say 5 inches. I usually start with the fabric folded to sort of match that and go from there. Often it really depends on how much fabric I have.
Enjoy playing with it all!
Dina