There are no don'ts except don't have your finger too close to your machine needle! It really can hurt!
That said, do what works for you! Someday I know I won't have the budget that I do now, I am stocking up on fabric, but when I first started out, I stuck to one quilt at a time. Just because it worked then doesn't mean it always has to stay the same!
Don't let anyone else tell you what and how to do something -- find the way that works well for you!