I have about a pound left of 700ish fp down from my top quilt project. I've really been wanting to get an uq shell from underquilts.com, but I already have a 20* incubator. Should I get a shell and make a summer underquilt or would that be a waste? I just got the incubator so I don't know how it will vent in the warmer months. Btw, here's a pic of the top quilt.