I came from a 2013 Tundra Rock Warrior.

I understand. I wasn't towing an off shore Cat/Vee whatever you got, but I was pulling race car trailer and supporting gear.

All told about 7K. This was out of the range of the 4runner, hence the Tundra choice back then. Tundra towed ok at that level, but man it required a bunch of planning and soft hands and feet on the controls.

I can't imagine 18K, wouldn't you be in an F550 Top Kick type range?

I went to a 4runner as I needed to get to work and back in 1 tank, including day care drop off and pick up. I sold the trailer, but still have the race car.

Do what you want.

Good thing about the 4runner holding value, you won't lose too much more if you hold onto it for a year. Esp since the 2020 is minor improvements yet again.