Background: I have a surly crosscheck with 25c panaracer pasella tg tires and am only using a full size set of ortlieb rear panniers. My handlebars are pretty high for an fairly upright riding style. I weigh about 135, fully loaded bike was 50lb (roughly 30lb bike and 20lb panniers and gear). I can't imagine carrying more than I was on this trip.
All advice is welcomed.