CEN - Study Help and More!

I am an older RN, over 50, trying to get back into the ER - have many years past experience - 10 in ER, and over 30 altogether. I have renewed my ACLS, I have done a Telemetry Cert. and will be taking PALS in Jan. '09. I have been in a teaching position for 2 years, and miss acute Trauma Care. I am having a hard time getting back in however. It is hard to be patient! I am starting to study for CEN, and also to update my knowledge base as I keep applying.
I have 2 questions : 1) Am I on the right track of getting current again and finding a job?? Any other suggestions???
2) I have searched for some books to study for CEN, and the two I come down to are: Sheehy's Emergency Nursing, and the other is Emergency Nursing Core Curriculum from ENA. Can anyone out there tell me which is better to get ??? Thanks!