Haha! I'd be thinking the same thing, I suspect. I'm working on my GHB/BOB right now and it's probably about 40 pounds with food and water. Wouldn't want much more than that. Of course, in my younger more foolish days... LOL!

What kind of a trek are we talking about for this project? Are weather, mechanical injury, etc. risks?

Walkie talkie comms? Cel phones? PLBs?