Tough call. Here is a link for the Ford Towing Guide
. You will find that Ford does not recommend using a WDH for ANY of their vehicles unless TW exceeds 500 lbs. I don't agree with that thinking, like most others here.
But tha't a very light camper you have there, at 2800 lbs dry. But someone mentioned 3800-4300 as an estimated loaded weight. That's seems overly-conservative to me. Typical conservative estimates for loaded weight over dry:
Popup = 600
Small TT = 600-800
Large TT = 800-1000
5er = ??? (some people live full time out of these beasts!)
I would use the 800 lbs figure, putting you at 3600 lbs. At 13%, that's 468lbs TW.
I recommend you try a local trip with just the friction sway controller, to see how it runs loaded. It would be good to get an actual TW measurement loaded as well.
Worst case, your out about $50. Going straight to an Equalizer (which I highly recommend if needed) is a $500 decision which you aren't sure you need to make yet.
This is the route I took with our first camper, a popup, behind a '97 Chrysler minivan. I was confident that I could keep the 2400lb dry popup to no more than 3000 lbs or so, but had no idea how loading it would affect the TW. So I did just what I recommended to you. Simple drawbar with a welded sway-control tab to accept the little ball (they also make an adapter that clamps under the ball).
It towed fine, but I found out that TW was 375lbs. 350 on this van required a WDH, and it showed. So I got a 400 lbs rated Single Bar WDH. The head was built to accept a friction sway controller, so I was actually out nothing.