I'd install a set of torklift stable loads first. Used them on my 04.5 and have them on my 2015. I'm towing a 30 ft TT with 1500lbs on the tongue and a full pickup bed. with the WD adjusted to bring the front back to stock ride level, the back drops about 2 inches with the stable loads. they can be easily set to work or be stock ride. basically a rotating plate that takes up the gap between the spring pack and the overload springs so your on the overloads all the time when they are engaged. rear doesn't need to drop at all to start using the overload springs.
yours looks like the WD isn't adjusted as I would. your front ride height looks higher than unloaded. crank up the bars or heavier bars till your back to unloaded front ride height.