My initial CFI oral involved having 9 (niner) books open on the table. I ended up referencing each one. The lesson plans were involved, were written by me, and took all of 6 hours to put together. Well, 6 hours and a 12er of beer afterwards with my friends.
It was well worth it.
Wow, they let you do that? Wish I could have. I had to use my small nogging. That is cool, though. Kudos to you.