I am using EK Inorganic Chem 2004, PR Comprehensive Review (2006), and Kaplan Set (2007) for content review. Are these books sufficient, or have they become outdated?
Get some new books. Now, it's not that those books are necessarily out of date, it's just they aren't very good. For book suggestions, you could check out my study thread or the MCAT Guide FAQ for the book list.