emarsh, your weight on the rears will be much lower than Okie-Go's, being his is a longbed and has 100 gal of fuel.
My shortbed 2wd was exactly 2750lbs on the rear wheels when I weighed it, with about 100lbs of sand in the bed and a full tank of fuel. I also had my stuff for the weekend, maybe worth another 50-70lbs in the cab. The front was 3750, bringing my truck's weight to 6500 pounds. Another time when I weighed my rig it there was basically nothing in it and low on fuel and was about 2600lb on the rear.
Vaughn