Questions about tire and axle loading

As you are intent on moving forward on this project. Be sure to look beyond the obvious. Have you compared what others are doing for shocks? With this weight on the back, your front shocks/coils (if you have them) will certainly be impacted. How about brakes? Going to a hotter use pads will provide more stopping power in extreme conditions such as mountain driving and panic stops. Is your radiator up for the task in extreme conditions?

Personally I would go the way DJ is suggesting, as well.

b