My 1,800# Lance 815 with only a 70# A/C option comes in near 3,900# loaded for a long trip with two adults. Empty with just propane and battery, the camper weighs closer to 2,300# than 1,870#.
With the coils of the 2500, I am surprised you aren't having sway issues.
Biggest concern is you are under your axle and tire limits. IF you are when loaded for a trip with everyone onboard along with a comfortable/controllable ride, then I wouldn't have a problem with it. Braking is the same between a 2500 and 3500 so you wouldn't gain anything in that department.
