I also have lots of fab. in spots, but as long as you have your 1/4 in. at the points, I think you are fine. It is easy, fast and fun, and will be a good project while you are recouperating.
Wishing you a fast and complete recovery! My grandmother told me when I was learning to do embrodery (like 65 years ago!) that the back will be just between God and you, and God is very forgiving!