'16 F250 w/o in-bed 7 pin plug & how to get a camper package

Well congrats on the new rig! That's a heck of a step up. You're getting a great truck. Have had a couple of them as company work trucks....solid.
I wouldn't go to the dealer for anything. If you're not comfortable doing basic mechanical work yourself, pretty much any mechanic can do basic suspension upgrades or trailer plugs.
Plus, you can buy plug n play kits for an additional trailer plug. Check out etrailer.com.

I don't use the camper much so I just made an extension plug from the rear plug by the hitch.