Just a quick bump to the thread. I had actually pulled the trigger on the truck and then was lucky enough to exchange it a few days after to one with a max tow pkg and higher payload, everything else being equal (except the truck is now black). Here's a pic:
F150 Ecoboost 4x4 XLT pkg. Tuxedo Black. 3.73 gears. #7700GVWR, #1766Payload, 157" wheelbase, 6.5' bed.
Love this truck and should have no problems pulling the trailers we're looking at.