I am looking at this pack for hunting. For the most part I will be carrying around 50 - 60 pounds. But with a little luck I will be packing out about 100. I know the pack is only rated for 70 but I was wondering if it could handle the extra weight? no pack is comfy at 100 pounds. Will this one loose its charm? I guess I would ask the same question of the Aether 85.