If you're not stuck on Ram you might try looking at 1/2 tons from Ford and Chevy/GMC. For some reason Ram 1/2 tons have really low payload ratings. A buddy has a newer F150 loaded (4X4, etc.) and still has roughly 1900# payload. Another buddy has a similar Ram with 1070# payload. The trailer you describe would probably be okay with either but there's is a HUGE difference between 1100# and 1900# of payload.
Also, while I generally agree not to go with dry weights I disagree with the "go by GVWR" crowd. I don't know why this information is thrown all over as it is really bad advice. Just because a trailer CAN hold a given amount of weight doesn't mean a person WILL load it to that. CCC (difference between dry and GVWR) vary widely. I've seen them as low a 900# and as high as 4700# for different trailers. Why on earth should I go buy a truck capable of carrying and extra 4000# if I don't need it?