Thanks, all. Given the weight limit and the heat, I took the 17-40, 24-105 and 40. In the end, of the 2000 RAW I brought home, over 90% of my shots were with the 24-105 and 4 shots were with the 40. I used the 17-40 to get a few interiors and probably, in retrospect, could have done the whole trip with 1 lens. All depends on what you want. I am not the tripod-long-exposure kind of shooter (yet). But, I will bring a lot more on my next adventure (Denali)!