Create your own Crystal Tower

Merely for fun. Make your own Crystal Tower by using enemies and characters from previous Final Fantasy games using the following set up:

First Room - 1-3 sets of trash.
Second Room - Boss
Third Room - 1 Trash
Fourth Room - Boss
Fifth Room - 1 Trash
Sixth Room - Boss
Seventh Room - Main Boss

Rules
Enemies don't have to be from the same game.
Boss Fights can only be one enemy at the start - Adds can spawn.
Enemies can be whoever you want - If you want to kill Chocobo Sage now you can.


Additionally you can give your Crystal Tower a name, and even give a small story as to why your main boss has decided to take on Eorzea. You can also tell us how it would look.