It's up to you. I agree with Shui whichever one you have the best concept for. I usually write down my ideas and when I have a solid concept on paper then I usually start editing.
No matter what, stay calm, stay cool and live life to the fullest.
Plus as Gene would say always go big in life.
Anime Mid Atlantic AMV Contest Coordinator 2007-2011
Katsucon AMV Contest Coordinator 2010-2011
T-Mode Contest Coordinator 2013
Nekocon AMV Contest Coordinator 2014