JR - this is a very good idea and important task. But you must not manage it. Keep your eye on the ball. Give the ~400MSC to some dedicated guy here with some intelligence and forget it. Let him administer the promotion the best he can. Maxmint has won the faith of many - I don't know whether he could operate to serve this task also. But in any case, you can't do it. You need to give your energy to the next contest.
I also think you could leverage these ~400 to make a second contest. Again, someone else could administer it. But, when many people are competing for these funds, we'll produce a much bigger overall effect. Forget tweets - well directed press releases are the way to go. When those land on the right journalists, we will get plenty of the attention we could use.
I agree about maxmint. I'd like to give him first shot at running this. Having lots of people run it might be . . . chaotic

Max does not deserve the punishment of running a giveaway.