I coworker pulls a 19ft pathfinder and his only complaint is his gas mileage, but he is a speed demon. If a recall, he mentioned that his MPG drops to 7 but drives near 70 MPH on the freeway. I recently purchased a 2020 for my wife; with the intentions of towing my 18ft Kenner in the future. I may do it sooner when she's not looking.
Go for it but, I recommend to stay under 70 and take it out of 5th gear unless on a straight path. Keep us updated.