I'd either re-live this one, and predict everything that would happen in advance (correctly), or I'd go into the past, and create something awesome before the real guy could, and
forever change history...
But that's just me.

__________________
Reports of my death have been somewhat exaggerated.
"Is my species of consequence to you now, Mustang? Did you really want my position that badly? Although I can appreciate the vanity of ambition, you should have spent more time planing. Even if you had somehow pulled this off, the counsil would have found you out, and they'd never let an assassin back into their fold." - Pride, FullMetal Alchemist