With the 3.73's you will be fine. Exactly the same setup I had. Make sure you get the WD hitch set up right and it will tow well.
When you get ready to go to another TV, you may want to consider a 1/2 ton if you don't really need a diesel 3/4 ton. Don't get me wrong, a diesel would be great, but you don't really need it if you don't plan on going to a bigger TT - and, if you are on a budget like I was, you can get a lot newer and nicer truck for the same money as a much older diesel... just something to consider.
2015 Jayco Jay Flight 26BH
2010 Chevrolet Silverado 1500 Z71
Reese Dual Cam HP
Tekonsha P3 controller