Congrats on the truck. As much as the EB impressed you unloaded, wait until you get a trailer behind you. It's benefits are amplified when towing.
I'm at 50k trouble free miles. About 20k of those towing 7k pounds. Leaving this summer for our third 6k+ mile trip with it. It has been not only flawless, but impressive through everything the Rockies could throw at it.
Two weak moments to point out. Coming down the long passes in the Rockies, I kept my speed way down due to lack of engine braking. Second, when you hit headwinds, the mileage will drop like a rock. Both concerns are probably true in all trucks.