tow vehicle for travel trailer

This is surly not the first post like this and probably not the last, but I am a newbie looking at purchasing a Rockwood mini lite 2304s dry wt. 5654, GVW 7660. I have never towed before. Finding the right tow vehicle is down right confusing so i”m looking for some advise from the experts! I don’t feel comfortable taking advice from car and rv sales people. Don’t want to overkill it, but also don’t to want to be underpowered driving in the mountains which will be a minimum of once a year up to the North Carolina mountains (Linville area). I’m assuming a 1/2 ton is sufficient. Looked mainly at the Ford F 150 2.7 and 3.5 EcoBoost engines so far. Thinking the 2.7 is too small. I would like any and all advice on any of the big 3 pickups but mainly advice on the appropriate pickup engine for the weight of the trailer. Thanks