A few years back, went from bags to quilts. Wanted a wider quilt, they were a little tough to find, so called Underground Quilts, and they built a couple custom quilts for me. Both at 64" wide, a 30° for myself, a 20° for my wife, with her,s being a little shorter. So far, haven't felt any desire to go back to bags.. These days, pretty easy to find 65" wide quilts. I would suggest going wide, and long. EE makes a down hood, and down booties, cure the cold feet, if neccessary.
Take a look at the Underground Quilts Bandit XL. If I remember correctly, sewn foot box, one less draft, whatever fill weight or color combo you might want.. Having run them for a couple years, would just go straight to the sewn up foot box. At the time I got them, figured I would pop them open, use them like a flat quilt every once in awhile. Haven't bother to do that yet, if it's a bit hot, just kick one leg out.
