Hi James, I'm very interested. I do not have high altitude experience but I do have glaciated terrain experience, crevasse rescue training and the Colorado Mountain Club's High Altitude Mountaineering two month school under my belt. I have a moderate amount of class 5 rock with pack and boots experience, lots of ice climbing including leading, and lots of winter mountaineering experience including winter camping and short expeditions including steep snow climbing couloirs, ridges and faces. I'm personally a little more interested in Artesonraju and Tocllaraju with the idea of going to even more remote and technical peaks depending on how things go. I do not lead rock but can lead sport. Check out my experience here on my tick list. July time frame sounds good and can go 3 weeks to a month too.