Looking at 2017 F150 XLT Super Crew with the 3.5 V6 GTDI Eco Boost and new 10 speed. It looks like it can tow and has the payload for our 30' Heritage Glen with dry weight of 6400 and 7500 with gear, ...
The F150 3.5L Ecoboost engine is amazing. It is a towing monster. I have setup similar to the one you described and I have no issues at all. See photo in my signature.