Towing experts?

Ok, so this isn't A body related but it is if you tow one, lol, here's my question although I have towed many boats in my profession I don't tow a lot of RV,s. My wife and I just purchased a new RV on the weekend, it's 20 feet long, single torsion axle and weighs 3500 lbs so fairly lightweight, I intend on towing it with my 2019 Ram limited which has a factory air bag suspension that self levals with anything on the hitch. My question is should I use a weight distribution receiver? We will usually be towing no more than 200k, ( 120 miles ) to our RVing destination usually on the freeway with a 110km ( 70 mph ) limit. My concerns of course is tail wag at speed or on a windy day. My research says a RV trailer under 5000 lbs won't require it. I pick it up this weekend and thought I'd run it down the freeway and see how it feels. Dose Anyone who tows a RV or maybe a enclosed car trailer have any thoughts?