I would do as many have stated, LT tires, trans. cooler, I would also look into a rear sway bar. Without a trans. temp gauge I would change the fluid often, I change mine once a year, I also change all my fluids once a year. It won't hurt anything to make sure it is in good shape, heat kills. Good luck with your set up, and be safe.
2006 2500HD CCSB 2WD 2014 Crusader 285RET
Nights camped in 2013 - not enough!
Nights camped in 2014 37
Nights camped in 2015 40
Nights camped in 2016 39
nights camped in 2017 7