This is one for a change to a dual cab ute.
I used to have a R51 7 seater Pathfinder it was great vehicle, liked the way the 3rd row rear seats folded and integrated flat into the floor when not in use, well great till my kids got older, the rear seat area was small I could feel their knees in my back and I was also struggling with room, with 4 people gear , fridge etc-- and I found range was small -- I was only getting about 550k to a tank, I was generally carrying a 20L jerry, and extra gear on the roof, and a second spare wheel.
O.K. swapped to a dual cab ute 2 1/2 years ago and I couldn't be happier -- I guess it wouldn't had worked so well, if I didn't consider my setup as a "whole", that was with cabin size, what I was doing with the canopy, spare wheel carriers, suspension modifications, long range tanks range, and how well the vehicle was going to 4wd, - My opinion if your going down the dual cab ute way budget for the complete project, and with what I ended up with was great long range off roader that has comfortable front and rear seats area for adults, that can easily securely carry all our gear, my dual cab ute has already been on quite a few 4wd adventures, and many to come.