Have 2nd edition 11th hour and 7th edition AIO CISSP books, do I need to update?

relegated

I have the 2nd edition of Eric Conrad's 11th hour study guide and the 7th edition of Shon Harris' AIO exam guide. There is a 3rd edition and 8th edition, should my current books work or will I be missing anything that the 3rd and 8th editions of these books have?

Should these two books be enough along with Cybrary and Sunflower? Any other free materials I can use? Any practice exams that are helpful or close to the new CAT format?

I already have my Security+, SSCP along with some other certifications. I have already studied for a while off and on for the CISSP but have not taken the test due to cost.

Info_Sec_Wannabe

Up to you I guess.

In my experience, I used the Third Edition 11th Hour as my primary source, supplemented it with the Shon Harris AIO (primarily the chapter / domain summary), Kelly's CISSP course in Cybrary.it, practice questions from Luke Ahmed's FB group- CISSP Study Notes and Theory (has a lot of great practice questions) and Google. I've also looked up the domain changes / movements launched in April 2018 - 

https://cccure.training/m/articles/view/NEW-CISSP-CBK-version-is-coming-out-in-April-of-2018

Best of luck in your preparation!