Maybe. Probably.
It is a well made, and functional pack. There are lots of them available. Some will fit better/worse than others on you. You can only know if you get one setup to fit you, and put 50+ pounds in it. See how that feels, and go from there.
The last thing you want is a pack that works fine with 20lbs of day gear but tears you up when you need it most.
IMO, boot fit is number one, and pack fit is number two. Get either of these wrong and the trip is not fun.
Jeremy