I currently tow a 30ft - 2011 open range roamer 303BHS (7100 dry) with a 2013 f150 ecoboost (previously a f150 v8)and we loved the design & floor plan as it was different than all the others at the ti...
I would start with a CAT scale for the truck/trailer combo. Take 3 passes to determine your TW, how well the WDH is adjusted, and where you stand with respect to all your truck's ratings.
Truck empty, truck with trailer tongue on ball, truck with trailer with WDH.