Assuming you are not going to use a weight distributing hitch, either buy a ball mount for you receiver that steps down the appropriate amount or buy one of the ball mounts that offers adjustable height. It is just that simple. The trailer should be level or slightly nose down for best ground clearance.
Here is a link to one on-line store that sells what you need:
Before you buy anything, load the trailer like you will when you go camping. Loading a cooler full of drinks and ice and throwing it inside the camper door then filling the fresh water tanks and loading the front storage with that BBQ or wood or charcoal or whatever else you may put in there could change your nose high to close or completely level.
Do this and you will know exactly how much of a drop hitch you will need, if you need one. Don't take the time to do it and you may level only to be nose low a little once your loaded for that week long vacation.
Agree with the level or slightly nose down is what you are shooting for to get best trailering behavior.
2011 Silverado Crewcab 4x4
2012 Passport 238ML
Hope your travels are safe and the friendships made camping are lasting.
A lot of later model trucks, and especially Ford, are coming straight from the factory with a Cat V hitch already installed with a weight rating of 1,000 lb tongue and 10,000 gross trailer with no weight distributing hitch required until you exceed these numbers. They do however many times require an adapter to get it down to a 2" receiver.