I'm not sure how it works out with the finance, but if you can get about 9-10% and a good part ex you should be in business. This is what the general consensus was by the folk on here.
People are easily getting 7-8% without asking any questions, you can use quotes from DriveTheDeal for a bit of leverage to make the last steps to the deal.
No options makes it the discount harder for the dealer, the options are where they can save you bucks.