I just read on yahoo about the best day in the year to buy a car is today(Labor Day weekend), 31,000.00 is a great deal, honestly I think you should jump in on it now before that deal is off.
If you don't like the tires (like most of the people on here), ask them to swap them for some all-terrains. My only regret on the purchase is not asking for that. The stock tires are just too wimpy looking.