On Wednesday, November 19, 2014 6:34:09 PM UTC-8, Dave Nadler wrote:
A good start!

Most important though: Keep a CAREFUL record of all your changes,
as you'll need to repeat the process next time the official source
is updated. Make this info available to reviewers as well.

Hope this helps,
Best Regards, Dave

PS: Are you going to tackle local airspace info customization too?

Looks like a thorough approach to me.
Local airspace can be retrieved using Lynn Alley's excellent website.
FAA data can be added there too, but if you have information you would like to keep from your own database proceed it with a tilde (squiggly thing).
Jim