I see you have a lot of comments etc here so I'll keep this short.
I see a fair bit of potential for this game and idea.
Please consider, when you feel more comfortable of course, in putting it up for Steam Greenlight.
I personally would vote for it and definitely buy it.
Just a question, if I was to donate towards this game, would that theoretically (if the game/project continued) give me access to a copy of the official release down the track on whichever platform you choose to use?