You've gotten lots of good advice on pack brands so I won't add to that list. I currently run a Stone Glacier and have been very happy with it. What I will say is a 10 day hunt is a LONG hunt so buy a bigger bag than you think you need. I would be looking in the 5500 cu in range as a minimum. Yeah, you'll hear some guy tell you he can do 10 days out of his 3000 cu in pack, but I'd have my doubts. Goat country can be some of the steepest, nastiest terrain out there and I wouldn't want anything strapped to the outside snagging on brush, tearing holes in sleeping bags etc, because I didn't have room to get it inside my bag. The weight difference on actual bag size will be minimal and even a large bag will cinch down pretty small when all the capacity isn't needed. Also, most bags can be swapped out on the frames so you could run a 6000 cu in bag for your goat hunt and purchase a smaller bag later if you decided you wanted something different for day hunts.