Is Lippincott '04 out of date for CEN?

I'm getting ready to purchase my CEN review material, and was considering going with the ENA Core Curriculum (published in '07), and the Lippincott Q&A. I think the ENA will be okay at 2 years old, but what about the Lippincott from '04? Would it be too old? The other option is getting the new ENA review published in '09. I have a Sheehys manual, and would be using that and the Core as the reference books, then the other book as just sample questions. Thoughts? Looking to take the test in the spring sometime.