Thanks Steven. Most of my photography is landscape, some birds and portraits under strobes. Process with Capture One/Topaz and the ones that are half way decent are made into 17x22 prints on an Epson P800 usually with Canson paper.
I too use the 7D mostly with tele lenses. Good point about the 17-40, I have never tried it with the 7D (used to have a 10-22 for it). I do have several ND's for the 17-40 which may come in handy since the 11-24 does not have any filters. Perhaps I can do HDR with the 11-24 over several shots to get the dreamy waterfall shots and alleviate the need to use 17-40?
We plan on taking the ring road, Gulfoss area (1 night), Vik(2), Hofn(2), Myvatn(3), Hvammang(1), Snaefellsnes peninsula(3) on a horse farm, and the last night at an airport hotel. Getting on in years, and some health issues limit my ability to do the strenuous stuff. I found a contraption to strap my camera day bag to small 4-wheeled carry on to make transportation a bit easier. So I should be able to take the 300mm etc in the carry-on and the camera bodies in the day bag. Maybe the 50mm prime too?