One thing that has not been covered is does your truck have a tow package on it. This will include a heavier radiator and a transmission cooler. On flat ground you may be ok but if going into any kind of mountains you will be taxing your cooling system as well as the transmission. Next item is tires, are they rated for that kind of weight. Loading your 1500 to maximum rated load will put the maximum load on your suspension and you will probably wind up with upgrades to handle it.
How do I know this? Been there and done it and wasted alot of money trying to make a princess out of a frog. What ever you do good luck and enjoy your journeys.
