In about a week you will be able to test something very similar to that. See my sig.
I checked out your site, is your idea that people will put in say 100 people put in 1 BTC each, then whichever project receives 51 votes will receive all 100 BTC or is it something else?
If you have 100 people and someone comes up with a proposal that requires 100 BTC and people put in 1 BTC each then 51 votes will only result in 51 BTC and the proposal will fail.
If you have 100 people and the proposal is for 50 BTC at 1 BTC per vote and you get 51 votes, then the proposal passes and those 51 people are now part of a new group that is in charge of moving the proposal forward.