Just to be clear, there are two separate concepts here. A
weight distributing hitch works to level the tow vehicle by distributing the weight of the trailer front to back. You don't mention what the hitch weight is but if you take 15-20% of the total weight you can still have 600-800 pounds on the hitch. With a light truck, weight distribution would absolutely be a good idea, in my opinion.
The second concept is sway control. That's the second part of Jon's reply. That keeps the back end of the trailer from fishtailing as you buck side winds and semis on the road. Absolutely a good idea too. With weight distribution and sway control you should be ready to roll.