I noticed this truck for sale at my local dealership. Looks like it's about $3,500 over msrp. I have no connection to the dealership, but thought I would pass this along if anyone is looking. Their asking price is $35,425...
I think you have to consider more factors than just weight and tow rating. Speed, distance, elevation, temp and wind are big factors too. Towing your setup 100 miles at 60 mph without elevation changes is way different than towing at 80 mph for hundreds of miles over mountain passes in 100...
I sold my Pruis that was just like yours when I ordered my Maverick. Unfortunately I didn't know about all the delays on the Mav at the time. It was a great car. Zero issues in the 8 years and 100k miles I owned it.