Man this is totally your call, and there’s some polarization on used ecoboosts. I’d not buy one if it looked modded. They are generally solid, solid drivetrains, but also very complex. I really like our ‘18, and even though it’s had hiccups, I like it enough that I wouldn’t want a different truck. Handles well, quiet in the cab, tows like a hoss, and seems reasonably well sorted.
that engine isn’t going to like 8 mile round trips, but you’re also in TX where it won’t be in a cold climate. The fuel mileage of commuting in a full-size won’t be bad at those distances.
chances are you may uncover some other hiccups over the first year but if you address them it will be a nice vehicle.
have you driven the 2.7? I actually prefer it, but the 3.5 is solid and has its own benefits.