you can get a brand new one for 250 bucks more. If that car has 5K miles its a demo. They are making close to 3000 on the deal in the front. But remember at 72 months a change of $10 a month is a cut of about $700 in the selling price, so you are going to be making dramatic changes in the monthly payment.
Have you considered leasing a car? Im just not a fan of the 72 month term, especially on a car with only a 4yr warranty, if 529 is a stretch can you afford the 60,000 mile service when it comes up? or at 6 years when some wear and tear starts hitting you will definitely be getting a 4 digit bill for some work.