So, our original TV was a 2013 F150 Ecoboost. Our toyhauler trailer is about 6900lbs dry, and probably was under 8000lbs loaded as we didn't have a lot of stuff in it when we first got it (didn't haul a toy or anything like that). We had all the proper equipment and tires etc. Towing it with the F150 was not a fun experience, even though the #'s indicated it should be fine. It was only really comfortable to tow if the road was straight, no grades, and there was no wind and nothing large (semi or bus) going the other direction. We upgraded the truck to a 250 and it was much MUCH better.
So, ditto, less trailer or more truck.