I have a Whitehawk 33BHBS (7168 lbs dry weight, 8500 max GVW). I was towing with a F150 4.6 l with a 7150 max GVWR (1257 lbs payload). I never weighed the setup, but with a max 15% tonge weight would have been over my payload rating. I did tow on 1 trip last year and the rig handled fine on MI roads with minimum grades.
Do you have the tow package, max tow or HD payload package? if you have max tow you should have around 1700 lbs of payload (HD should give about 2200 lbs). I looked at the max tow and HD payload as upgrades to my F150. with the max tow, I would just have enough payload to add my family, with nothing in the bed. That does not include the rhino liner and tonneau cover I added. The only option was the HD payload in an F150. Your trailer is heavier than mine. I would say without the HD payload option I would not even consider an F150...you need a F250 minimum. I bit the bullet and just upgraded. The truck hardly sags with the trailer hooked up.
I'm glad I upgraded. My family's safety is worth the extra investment.
2014 Whitehawk 33BHBS
2014 F250 4X4 Crew Cab 6.2 l 3.73
2010 F150 4X4 Supercrew 4.6l 3.73 (traded in)