We are going with a dice tournament next. Registration will open next week.
Nice, hope you take my previous suggestion as the priority on what kind of dice tournament you are going to start. Or probably you can try a bingo tournament like what have been done by primedice some time ago.
Dice win rate tournament would be excellent with a minimum of 0.025 wagered and 100 rounds.
It would be more fun than bingo, wagering competition.