Good price, if the car is equipped exactly the way you want it, then do it. If its not exactly what you want, then wait -- you will likely find another similarly priced with the color and options you want.
Prices will continue to go down and mileage won't necessarily go up since there are a lot of garage queens that will get traded in when the Gen6 comes out.
BUT its not worth waiting for a lower price because that's time you could have spent driving it!