Looking for opinions as to insulation level. I know we are all different. But, my hunting has been limited to deer hunting. Walk a few hundred yards to a stand. Some walks are relatively easy, some not. My feet tend to get cold sitting in a stand. I know we will be walking more on this elk hunt, so too much insulation would be a bad thing. I have a pair of Danner Pronhorn w/400 gr. of insulation, but want to take a second pair. Suggestions?