If I were you, I think I'd be searching out an older Dana Design Terraplane, or even an Astraplane. These packs are probably overkill for many situations, but with the weight you're carrying, the suspension on these older packs can really support quite comfortably the heavy loads. And if you have the money, you can check out the new packs that Dana is making at Mystery Ranch. The G5000, G6000 and G7000 seem right up your alley. Ed