[Brewster]

I would call a break when you get down to 14 people left and reassign everyone to two tables to keep things a bit more even. It may take longer to get to the final table but it will give the participants something to think about.

eg. you are down to ten players (6 from table 1 and 4 from table 2), the players at the first table may want to accellerate their game to build a nice stack for the final table or go conservative and try to outlast the others leaving them rather shortstacked at the final table. The smaller group at table 2 may decide to play things slowly and hang on to their chips and wait for the final eliminations to come from table one rather than risk their stack trying to outplay each other on their shorthanded table.

With regards to the blind structure, I would stop the timer and continue at that level until the final table is set. For the final table you will have 8 players battling for 48000 in total chips (assuming no rebuys or add ons). This will leave each contestant an average of 5250 in chips. 100/200 is going to accelerate the pace of the game and put some serious pressure on the short stacks at the table.

I have only run a few smaller tournies so I will hold judgement until some of the more experienced players/organizers on this site step up to the question. It does sound like fun though. Good luck and keep us informed.