Sounds good, isn't too hard to draw up a small tournament board I guess. It could even be a team event, but that does make it harder to organise and get the four people on at the same time for a match. A good way to do it would be once you know who you are versing, there's a timespan of about a week for all the first round matches to be done? Losers move into the other round vs other losers while winners move up?
What can change the nature of a man?