12-15% tongue weight for a good safe ride. Empty weights of a trailer are like lipstick on a pig... worthless.
Manufacturers put a dry weight because they want to sell more trailers. If you think you can haul their trailer, you'll buy it and they get a profit. By the time you figure out its a mistake, they've long since cashed your check.
5400 lbs still lets you buy a popup or a hybrid. Both are perfectly fine campers, as long as you don't want to full time or extended stay in them. Hybrids are NICE, I've got several camping buddies that own them. You get the benefits of a pop up (lighter weight, more ventilation, smaller size in storage or transport) and the benefits of a regular camper (easy set up, BATHROOMS, lots of space, etc).
Do it right the first time and buy an appropriate size camper for your truck. Otherwise you will be uncomfortable towing and quite unhappy. Good luck.