I would recommend wrapping just the front part (whole car is too expensive). i got the all weather mats on amazon for a cheaper price than weathertech and they seem fine.
i vacuum the car once/wk and wash the car once/month.
i have 3 kids (ages 12, 5, 4) and on my weekly vacuum it's absolutely filthy. food and crumbs in every nook and spilled liquids on the floors, etc. and yeah, i have the white seats and they are mostly holding up ok...
we got the 6-seater version. The big space between the mid captain seats seemed like it'd be helpful for storing kid bags and such. Also, it makes for a good place to put your feet when you're sitting in the way-back.