Here's another thing I thought of. Since the quilt is hand quilted, you really want to be careful about the weight of the quilt when it is damp out of the washer. It's a good idea not to hang it up to dry, because the weight of the water in the quilt will add a lot of stress to the hand stitches.
What I would do is spread a king-sized sheet on the carpet and lay the quilt on top of that. This way you can also "block" the quilt as it dries -- that is, gently pull the edges straight and flat so the whole quilt lies flat. Put one or more fans on the quilt to speed drying, and flip the quilt every day until it is perfectly dry.