Well, see if they'll budge on the price at all. I don't see an eventual 80-85k miles on an 8 year old car as a bad thing, especially if you're putting nearly 10k miles on it in a year, but I think I also look at these cars differently than some folks. Drive that sucka!

Get your money's worth, that's how I feel. It's just no fun taking the car out only on pristine, sunny days a handful of times out of the year. Don't subject yourself to that, no matter what the car is.
I think an 09 S definitely falls into the youngest-you-can-afford category, but keep on looking. If you simply don't find one and really want it, is it really going to be that bad if it takes you say another 6 months to pay the car off?