hey folks - so far i've been doing some canoe based camping to get into the backwood, and have been able to get away with a heavier square cut bag for summer. but now i'm shopping for a winter bag for some hikes, and wondering about snugness. normal bags have a shoulder girth of about 60", and on my large frame and shoulder girth of 55", this is quite snug. So I was looking at some Big Agnes bags cause they have a shoulder girth of 70". However since I'm looking at winter (0*) bags, I want to be sure I'm not getting too loose there. The problem is that the 60" feels a bit claustrophobic. Am I being a wimp about the 60" bags? What kind of clearance do you normally have?

thanks!!