How to study for part 1

I posted about the NBDE Part 1 a week or so ago, and I wanted some additional feedback. I will be taking it this summer, and wanted to make sure I have all the study tools to help me prepare for and pass the test.

I have the Dental Decks already, and some old released exams.

I was wondering if I should get the First Aid for the NBDE Part 1 or First Aid Q&A for the NBDE Part 1, or both? Anyone who has used one or both of these who can offer some feedback would be greatly appreciated. Also, what does everyone think about Mosby's Review?