Haha, you are going to get swamped voting manually, especially if demand goes high for your idea.

I think this is why people setup bots to do this. If I could get you a bot for about 300 to 500 STEEM, would you be interested?

The main thing you would do is control the amount of SP it uses per vote or per person. It would be configurable. I don't write bots, but I know some who do. Just let me know.