I had a Titan pulling a 6,000 pound (loaded) trailer using the Reese SC hitch from CW. My tongue weight sagged the rear end 3". I adjusted the hitch head angle to bring sag up to 1" down and then used air bags at 20 pounds to level the rig. This was on a new truck with OEM tires, not load range E. The trailer towed beautifully for 4 seasons with never a hint of sway. The Reese SC hitch uses friction pads on the weight distribution bars to incorporate anti-sway.
My son used the dual cam anti-sway system on a longer trailer with good results. Make sure your WD bars will accept the dual cams or additional expense. The system is dependent upon correct set-up which I would do myself to make it right.
Good luck.