yeah... b/c then you can get half the money back just by selling the rims XD j/k
I'd look for rust in the wheel arches, the car jack points, the side sill mouldings, in the trunk where the battery is at. Also watch anything that's been freshly painted, and be careful if the car's recently got underbody coating.
The torn seats are a huge neg because they cost a lot to replace, and check if the car has been properly maintained (regular maintenance intervals).
If you test drive it: Go there with another person. Have him stand outside the car while you drive (f.e. on a parking lot) so he can hear noises. Keep the windows down and turn up the radio only for a short time to check the sound system. Find out if you can have the car checked out at a garage or sth. Don't buy a pig in a poke. After the test drive, check each rim if it's warmer than the others/hot. That would show a problem with the brakes. Check out the seals, they shouldn't be torn or porous. And don't do the test drive only on city roads, a bit of highway driving is helpful as well.
To be honest, I wouldn't buy a car with such a high mileage...