Id say don't worry about it and go camping.
As I was towing my 32' enclosed trailer this weekend (basically the size of a big TT) that has a deckover chassis about 75mph down the pass on I-90 in the pouring rain and wind, steering with my knee, eating a burrito with one hand and changing the radio with the other, I pondered the effect of these add ons to a trailer that is not oversized for the tow rig and wondered how much more pleasurable a wdh and sway control would make my drive. I came to the conclusion that unless that stuff could allow me to drive from the backseat with a cocktail in my hand, I don't see what good it would be....lol
And I didn't use the big Dodge. Used a 2001 Tahoe on 20s. Figured 19 years later it should at least tow 1 trailer, haha. (Seriously, the inside of the hitch receiver wasn't even scratched up until 2 days ago.)
Point is, 40 lbs here or there, or a couple hundred lbs on or off the front or rear axle is largely insignificant it seems.