I didn't see crampons and ice tools on the list.
I prefer a .44 over a 410 - its faster.
You list a camera, shotgun, and fishing tackle. Thats a lot of "Mission hardware" for one trip. Is this your first trip? If so - well - eventually you'll learn that every piece of gear doesn't have to go on every trip.
You won't find a lot of helpful friendly campers while carrying a shotgun camping, especially if you are not dressed in camo gear.
Jim just my $.02 worth YMMV