Well it happened .. got a new rig

Congrats, you will love the 6.0 with the 6 speed auto. I can tell u that it will be a world of difference from the older 5.3 and 4 speed. I did the same and have never looked back. I don't recal the wieght that ur pulling. When I pull I always lock out 6th gear and use 5th with tow haul mode. In the hills you will see 4th. But the other real advantage is the capacity that u gained from 1/2 ton to 3/4 ton. U will notice it when pulling. My wife stated that the current 09 felt like a strong truck compared to the 02 it replaced. The nice feature is the ability to use the toggle method and choose the gear when u hit any hills. Anyway enjoy you're new truck, congrats. Oh on edit.... That 4x4 will come in real handy when u need it. Great choice!