I did not realize you had a 1 ton dually all ready. Take a close look at the Carriage Cameo. Very well made, similar construction to your Newmar, but somewhat lighter in weight. YOu would have no problem pulling it with your truck. Carriage is considered one of the top rated rigs.
2003 Dodge HO 6 speed Laramie Dually, Jordan controller, RDS fuel tank, Air Ride 25K hitch
Carriage 36' fiver, Onan 6500, Prosine 2K inverter, 3 slides, MORyde IS and Kingpin