Can I offer some advice?
or at least something for you to think about...
When I was shopping for my explorer.. one of my main "requirements" was a 3rd row seat. Ended up with a 04 XLT with 3 rows of leather.
Now since Ive gotten it...3 yrs ago.. Ive used the 3rd row seat .. maybe twice...3 times? Its always folded down.
And usually when you're carrying that many people.. there's stuff to go along with it. Once the 3rd row is up... not much room behind it.. by the time I put a folded stroller on its side and close the gate, there's no room left. And I end up piling suitcases and bags inside the truck.
Not saying its not useful, but usually when there's a lot of people to carry, there's usually a lot of stuff too.
Plus.. if you live where its warm, make sure you get rear air too... a front only system just doesn't cut it when your in the 3rd row.