I have a similar trailer (2017) and a similar SUV (2019 Explorer, 5,000LB nominal tow rating). WDH is essential; you will see the rear bumper drop 2 to 3 in on tongue weight alone, before setting the spring bars.
I use a Husky hitch, with added sway bar. It's basic and inexpensive. I got it "gently used" and if you know exactly what you need, it's OK to buy used.
Yes be careful not to overdo the hitch, get a WDH with a tongue load rating in the 400 to 600 LB range, or bent frames are a possibility. At first I mistakenly picked up a WDH with too high a rating, and the Husky folks advised me to get the lighter-rated setup.
The sticker on the trailer says 3,500LB GVW but, as noted above, do the calculations with cargo and all-up load. Then, try to stay close to 4,000 LB max, 80% of that "nominal" tow rating. It's called a "margin of sensibility".
Good luck, happy towing (and camping), and congrats on the new trailer!