The decision is ultimately yours, but at the end of the day, the vehicle has a rating for a reason, meaning that it can handle up to a certain amount safely and mechanically. I had an avalanche with a 5.3L, rated for 7200, was pulling about 6700, the motor could not handle the weight, traded up to a ram 1500 with a Hemi, and feel much safer and more controlled on the road.
2013 Dodge Ram 1500 Express, 5.7L HEMI
2015 Forest River Wildwood 28DBUD
2015: 7 Trips, 20 Nights Camped
2016: 7 Trips, 23 Nights Camped