Thanks for posting, Paul. I plan to do the same as you - back seats down w/ cargo cover & tray. How has the white on the door panels & interior roof held up for you in terms of dog hair / dirt and human touch? I am thinking of times when I car camp, or drive on summer dusty forest service roads. I live in a city so the majority of the time I'll use the car for city driving, but I do outdoorsy stuff and garden. As I mentioned in my post, I am not someone who is obsessive about cleaning the car & I don't want to have to spend extra time just because of the white. But if its just a matter of wiping the interior when it gets dirty, I wouldn't mind.
I wipe the inside doors down once or twice a month just with a damp rag and that is sufficient for keeping it clean. The leather'ette' pieces of the door are cleaned with leather cleaner once or twice a year.
I don't let the dog in the back seat though - sometimes the back seats are down and she can get around but I try to keep the seats up and she gets the trunk space. Keeps the fur a little further away.