Here are some across the scales real numbers:
2011 F-150 E-boost, sticker max cargo 1411 lbs.
subtract:
2 Adults and dog. 500 lbs
Truck cap 200 lbs
Camp gear and tools in bed 100 lbs.
This leaves 611 lbs for tongue weight.
Dutchmen Dry weight 5004 lbs becomes 6200 lbs across the scales when loaded for the road.
With the WD hitch redistributing the weight, the change in axle weight shows my load is near or at the the max cargo limit.
After 23,000 towing miles in three years, including two trips to the Rockies, the desert and the OK an TX cross winds, I can say the towing combination is fine; however, there is no doubt it does increase the wear and tear on tires and shocks.
So run your numbers and I think that unless you travel very light, you will find you will exceed your max cargo rather quickly.
Good luck.