Double beds are single beds to me. DH and I aren't tiny people and need the extra room to flop around in our sleep. As for the size of the quilt. I have to really watch this. I like a long drop on 3 sides (with shams) and with mattresses getting thicker and thicker, it gets harder to do. I like the drop to cover 1/2 the box spring too. Can you regulate your new quilt to twin size?