I have an opportunity on a great deal on a 2014 Streamlite Ultra Lite 30KBS. However, my main concern is that it is too much trailer for my 1500 Ram. I have my Ram setup for towing, 3.92 gears, ...
The WD hitch will send 100-200 lb back to the trailer axles. Not much in the larger scheme of things.
As to how big a deal it is to be over payload, it all depends on how much and how far. A couple hundred pounds for a few hours on the flat interstate, maybe not so bad. Way over for a long trip, or in hills or mountains, bad.
I towed overweight with a conversion van, until the transmission burned up after three years.