I really don't think you will have any problems. We pull our '07 232 with our '06 F150 which will soon have 200,000km's on it.
Out tongue weight is almost 800lbs, heavier than I thought it should be, but it could have been weighed with the water tank full.
We use a 1000/10,000 Equal-i-zer hitch.
Enjoy.
'14 Ford F-150 eco screw max tow, 3.5, 3.73's
'16 Freedom Express 257 BHS
and Equal-i-zer