Half ton ratings vary greatly. Tow ratings of 3500 pounds to 12000. Payloads of 700 pounds to 3000 pounds. That does not mean all half tons can tow any given half ton towable trailer.
Your truck doesn't have leaf springs. THe 2009+ Ram half tons are the lowest in the market for payload which is your problem at say 1100 pounds as equipped. The web site/brochure weight is no options, maybe the base trim level too. The door sticker is GVWR - as equipped weight assuming all fluids full.
6300 pounds dry, bunk house, family of 4, bed full ot camping gear, bikes, firewood, etc. You will be 500 pounds over GVWR, probably 300 pounds over rear axle rating.
The rear springs are very soft. The rear end sags more than competitors. I don'tr know if they are designed soft for the ride/handling, or because the rear axle is not rating to handle more.