We have the ST290BH and love it, tons of rooms and only a few small issues, we have only had it since July and have done 6 trips.
Sorry I haven't seen many configurations a 1500 5er, but know a couple made specifically for the F150 ecoboost, doesn't help you.
Welcome to your new addiction!
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Tow Vehicle - 2017 F250 Platinum 6.2 4:30 gear
Travel Trailer - Sunset Trail Super Lite ST290QB
Color : Enzo
Dry Weight 5,774 - Actual weight 6,767