I myself plan to try and go as a Final Fantasy I character (either White Mage or Red Mage)
I was thinking of doing that myself! Red Mage or Fighter, though. Black mage gets too much love for my taste.
I really want to get a Ryu Hayabusa Costume from the old games, too. Though, I think it'd be lost on too many people and people'd just call me blue ninja.
"Hey, you have a pretty cool ninja costume!"
"Ryu Hayabusa... ninja... Gai...den... *sigh*"
"But you're not wearing pleather armor?"
Gah, I hate his new black outfit. So lame...