Plan on going down any long, steep hills anytime? If your trailer has drum brakes they can easily fade and put more weight on the truck.
A trailer's brakes are it's weakest link IMHO. In addition to drum brake fade, we've had greased brakes and broken wires, all weakening their ability to stop the trailer.
One big reason I upgraded to a 3/4 ton diesel was the exhaust brake.
However an F250 with the big V8 should be better at engine braking than an F150 with the Ecoboost.
Otherwise, my 2011 F150 Ecoboost was a fine tow truck after upgrading the tires and suspension to HD Payload status. A quieter and smoother ride than the new 3/4 ton. It was over-loaded though ... but a HD Payload version would not have been, except maybe for the hitch receiver.