I’d focus on reducing a little weight.

if you swap to lithium you save weight, get more life and longer use, reduce weight, and you reduce weight even more by not having to have a 100lb WDH.

only way I’d run one if I had an issue with sway

 

So I'm towing a 6k camper with my F250 and I'm using a WDH but mostly for the sway control. It's a super light trailer for this truck and towed fine with a normal drop hitch but having the WDH really keeps it solid even in very windy conditions.

For a smaller setup like yours I would look at something like the Andersen hitch as it's compact and lightweight.

 

Same here. I tow a Geo Pro 15TB (15 foot box) single axle trailer with a tongue weight approaching 500lbs. I towed it ~ 10k miles last year without a WDH.

 

I do the same with a 3/4T and a 6500# trailer. Helps with sway.

 

If the trailer sways for no obvious reason its too light on the tongue. But given your weights that will not be a problem.

We used to rent 20' Forest River campers(ball to rear bumper). Single axle travel trailer.

Tomorrow I am picking up my new 20' Forest river single axle. I have an adjustable height hitch but not weight distributing. I expect no problems.

 

I'll close the loop here on what I've done:

Tongue weight: 480 pounds. Overall trailer weight, 3200 pounds. Weighed loaded for camping.

I have a correct ball-mount with side-ball for sway control.

I have a correctly configured weight distribution hitch with side-ball for sway control. (I configured it over the weekend.)

I will use the WDH because (1) I have it. (2) 480 pounds is very close to the 500 pound tongue weight limit of the hitch. (3) Anywhere I camp requires highway driving, up to five hours (as brief as 15 minutes).

480/3200 is 15% tongue weight ratio. Nevertheless, I like the security of sway control. And I like the level-towing feeling of a WDH.

 

Certainly nothing wrong with using it if you have it. But probably don't need to tighten up the bars much.

Just hauled back my new trailer. As stated, 20' Forest River single axle. Nothing in it except for battery, propane and spare tire.
In the beginning there was a touch of sway going on. So I transferred some weight from my truck to the front of the camper and it was perfect after. About 300 miles problem free.
Tongue weight is listed at 380 lbs. When loaded I am sure it will be right under 500.

 

I have a Haulgauge, now Curt BetterWeigh. On my first long trip, after moving a couple heavy items to the truck bed, I have consistently had a 380-390# tongue weight. Trailer GVW is 3800-4000# with full FW. Next time I’m leaving the WDH behind. One of several lessons learned this trip.
Initial trailer GVW was 4400.

 

I would use it as well, it will pull everything together, better, especially with stock suspension (note some others above have better than stock suspension)