I decided to go with WOF down the back and equal amounts on each side. Mind you this is my first quilting attempt. I used basting spray (tailor's) and not having a good result. The fabric has shifted and puckered and I've ripped out as much as I've sewn. I know I used enough spray since the can is supposed to be enough for 3 queen size quilts. I've only used it on this one and it's almost empty. I will keep at it until I'm happy with my quilt. I just see it as a learning process.