In reply to jpmci1:
I'm 5' 5 1/2 tall. I had a Verte 65+15 fitted and tailored - no extra charge - (diff size hip belt) at Aiguille Alpine in Staveley. Very Comfy, Bombproof, simple.
Just used it for hauling loads of up to 27kg in Peru. I agree that a straight 80 (plus extending lid) will be overkill.
Am considering another one from them: Super Couloir 46+15. That might be big enough for Aconcagua as you can strap stuff on the outside.
Adrian is a great guy and knows his stuff - very good range of products and all British made in the Lake District.