You say "hand quilted" and I am wondering if you have sewn these quilts by hand, as opposed to using a sewing machine.
My thinking is: if these are hand-made quilts, they would increase in value if they were also hand quilted.
I don't think I would take a hand-made quilt to have a long-arm quilter quilt them. You will need to decide what type of quilting is best for the particular type of quilts you have to be quilted.
I know someone in Missouri who does hand quilting, but I would have to ask if she is available for this work. She is not terribly expensive. Most often this type of work is sent via mail and not carried into a shop, unless your LQS knows of hand quilters. Individual quilters have different requirements. Some want you to furnish the backing, others don't care.
I hope you find the best person to do this job for you. Your quilts represent a lot of time and love!
June in Cincinnati