Have you figured out what you need yet?
Some other pointers to point you in the right direction. Do you have a second Air Conditioner? Do you know if it is prepped for a second AC? If your answer to either of these questions is yes, then you should have a 50 amp trailer. Truly easiest way is to look at the plugin spot on the out side of your trailer. There should be some fine print around the prongs and that will tell you what you have. I included a pic of mine below.
2014 Ram 2500 Cummins Megacab 4x4 Longhorn
2015 CrossRoads Longhorn ReZerve LTZ31SB (basically its a Zinger ReZerve 35' bunkhouse that has been decked out Texas style)