You need not be so concerned for the "stock" weights on Fords site. You need to be more concerned about your specific truck. First thing you need to do is look at the yellow sticker on your drivers door. These are specific ratings for your truck. There will be a number that shows you the max cargo capacity of your truck. This number is how much cargo your truck can handle. This number includes a tank of gas (26 gallons) and the driver weight. Any other weight you add will have to be deducted from this weight. So that is weight in the bed of the truck, other passengers and the hitch weight of the trailer and the weight of any WDH you will add.
There will also be weights for front and rear axle.
You will find you will run out of cargo weight WAY before you run out of trailer weight.
Now you mentioned dry weight of the camper, you should look at the GVWR of the camper, this is what your camper will weigh when loaded down with stuff, propane etc. The hitch weight will be any where from 13 - 15% of this GVWR.
Not knowing which trailer you are looking at you can figure that a dry weight of 6300lbs you might be looking at 7500 - 8000lb GVWR. And that would give you a hitch weight of close to 900-950 lbs.
You have the trailer tow package which is standard and you will find some of the people towing on here with the EB have the max tow package which gives you more room to play with. Plus a different real axle ratio of 3.73.
So start with looking at your yellow sticker and lets go from there.