I have the WDH as well. As Whiterhino said, a little trial and error and you will get the adjustments down for empty and loaded. You will be able to tell very quickly.
When set up correctly the truck and trailer will have "even" stances and it will drive very nicely.
Only thing I do different is I do use a sway bar. Maybe it's because my Dad always had one on the trailer or maybe it's just because I have it. But I have puled with lighter duty vehicles than some and choose the little extra to help the towing.