10-20°, and light, has a nice ring to it!
Few years back had Underground Quilts build me a custom Flight Jacket quilt, mostly just a wider cut than what they were currently offering at 64". I sleep hot, so went with a 30°, and paid the extra for the lighter fill, can't remember at the moment if I went 850 or 900..
Couldn't hurt to check out there sight, just priced out one of their Bandit XLs, with 65" width, 20°fill, etc, was right at $249, with a 4 to 6 week lead time.
The extra width is nice if you tend to toss and turn, avoid drafts, which would probably make you hate a quilt in short order..
They also have ready to ship quilts, think they are slightly lower prices.