Your quilt is lovely, I really like it a lot. That saying, I have to go with the few who have said leave it and use it as a learning experience. First, I don't think the borders are that wavy. Secondly, I think the hand quilting will take care of the problem.
And lastly, your vintage-looking depression-era fabrics just beg for cotton batting and the old, wrinkly, puckered up look.
JMHO
Penny