I know some of you may say Lucas should not make episodes VII, VIII, and IX, and some of you may say Lucas should make episodes VII, VIII, and IX. I believe Lucas would be foolish not to cash in on a sequel trilogy, especially after Fate of the Jedi.
If you haven't read all the books from Fate of the Jedi then you don't know what you're missing. Lucas has to approve and has a hand in all of the Star Wars books before being published. So here's what I'm thinking:
Star Wars Episode VII: Outcast (movie will be based on books 1-3)
Star Wars Episode VIII: Allies (movie will be based on books 4-6)
Star Wars Episode IX: Apocalypse (movie will be based on 7-9)
Edit: Oh shit!!! Darth Krayt is in Book 9 (Apocalypse) of this series