Welcome to the forum and congrats on your new camper!
You may not need W/D with that rear suspension but you'd benefit from having some type of sway control. Perhaps a single friction sway bar or two will be all you need.
If the truck's front axle ride height doesn't change when hitched up, you probably don't need a W/D hitch.
Nights camped in 2013 - 55, 2014 - 105, 2015 - 63