So your plans are to eventually be rid of area files, pfiles, class, race, and other files? Are you planning on simply substituting the database for the function of the flatfiles or are you planning to "query on demand" as the information is needed by the game?
And have you stopped to consider that relying completely on SQL to operate the game will cut out a large chunk of users? I had to address this very problem myself when doing SQL work for AFKMud 2.0 after finding out how many systems still don't have the required libraries and support files to do this. And that was just when I had converted helpfiles.
I'm not trying to discourage you from doing it, just making sure you're aware of what this decision means in the long term.