Alright, Cory is right. Many plugins = Many eventually outdated Plugins.
Is each district going to be its own separate world? It would be neat if each district had a separate economy, so that one district can purchase gold and diamond blocks easily, while others can purchase large amounts of smooth stone. Each district would then have a unique aesthetic.
How much roleplaying would be involved in this server? Since it's in the Hunger Games universe, I'd imagine a fair bit. Would players be zipping around districts using teleport commands? I hope not. I like the feeling of a substantial world with realistic spatiality.. and liberal teleportation destroys that feeling.