Good move with the new truck! I almost fell over when I read your post. LOL We're pulling a trailer with a GVWR of 5500# and a 770# tongue weight. With 2 adults and 2 kids totalling 90#, we are at our rear GAWR and almost at payload (we did have the truck bed full, but not with crazy heavy stuff). Our payload was less than yours at 1575# because we have the short box (SuperCrew, EcoBoost with MaxTow) but your trailer is WAY heavier. And the max tongue weight listed on my F-150 was 1150# so I think yours would have been the same.
Have fun with your new toys!
