I passed my AANP exam yesterday but I will say, doing Fitz only would not be enough. I did the Fitz review, bought her CDs and reviewed the Leik book. It was still challenging and there were many questions that had NO REFERENCE in both of those materials. I am happy to have passed and it felt surreal afterwards, but just know you won't know EVERYTHING. Just try to be as calm as possible so that you can apply the knowledge that you do know to help you. Good luck!