One thing to keep in mind regardless of the weight is that every time you hook a TT, 5er, Popup, etc. up to your tow rig, mechanical breakdown is always a possibility. I doubt 500 Lbs will take you over the top, but regardless of whatever you chose to do, No vehicle is bullet proof, but if you take good care of it, keep up on the maintenance, you'll be a lot further a head in the game than many other people are. If you enjoy camping, just be safe, I'm no expert, I can just say my opinion. I was tired of the white knuckles with the Avalanche, so I traded up to the Ram with a Bigger engine. Only YOU know for sure if you are safe on the road or not.
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