Try and nail down what your base cargo load is, between that and the cargo capacity you’ll have an idea which way to go. While your doing that pay attention to where your weight will be placed. Heavy items typically get kept near doors but you don’t want to be doing that with the rear doors because it’s horrible for weight distribution. Long wheelbase would compound this would it not..
Better yet tell your sales guy to put 1500 pounds in the back and take it for a drive. Sounds like a pain for the sales guy but better this then you finding out after that your not happy. A friend brought me along for a test drive a couple months ago, wanted my opinion, gave the sales guy my licence and told him I was going to grab the dump trailer and skid steer. He was happy, wanted to know how it went after.
I was in this situation 2 years ago on a truck purchase, went 3/4 and it took my tool weight fine but when it came time to pull a trailer it went straight back to the dealership for rear airbags.
