Reviewing for AANP?

I have been using lots of resources in reviewing for my Family AANP exam including Ftizgerald, Leik, and Dunphy practice books. I have also listened to the Fitzgerald and Barkley CDs. I am wondering other people's experiences with what percentages on practice exams they got and how it related to scores on the real thing. I am pretty consistently hitting 75-85% and wondering if that should be enough. All I want to do is pass!