I would be touring light. I can't really see loading more that 30 lbs. My last couple tours were in the 50 miles per day range. I agree that I don't want flat bars. I MUST change my hand position often. My Bianchi is fitted with a rack and I can carry what I need but the geometry is just not right for touring. I also found a Trek 520 that I am going to test out tonight after work.
Sadly, adding another bike is space prohibitive. I will be giving up my Gary Fisher Marlin. Oh, here is thought. Could I fit that bike with handlebars better for touring? Fenders? Hmmm more research. It has a rack, good grannies but 26 inch wheels.