Good choice of truck.
I would go with the 4.30 axle ratio, rather than the 3.73.
The 6.2 engine likes to rev. 4.30 gears will get it into it's powerband, as well as increase torque multiplication greatly over the 3.73's.
Also, especially in a 2wd truck, the limited slip or electronic locking rear differential will be quite valuable, should you find yourself in a low traction situation.
We don't see many folks coming to the forum, looking at 2wd reg cab gas engine pickups. This is a refreshing change! :)
You can easily change the factory rear hitch receiver for a heavier duty aftermarket hitch.