What systems are you developing it for (xbox, ps2, cube, pc?). You say its 'like' grand theft auto, are you implying that the graphic style is similar to that of grand theft auto 3 (or san andreas basically)? or at least will it be at the end of development?
When you say multiplayer, do you mean via xbox live, ps2 broadband, pc network, or do you mean splitscreen.
Your publisher, where will you be selling the game? Is it too explicit to sell in normal game retail stores such as EB? Will it only be sold online and at all good adult stores?
Your figures state you project to sell 75,000 units, saying this is low for the industry. I'm wondering does your game fall under the 'video game with adult themes' category, or the 'adult video game'. If you can't distribute it via the same methods that other normal video games are distributed, then those numbers you project don't really mean anything.
Please send me your business plan to
yug@yugstar.com as I'm interested and know some other people who might be interested in one form or another. Don't be thrown by anything I say, I'm just interested in finding out the exact details, as it sounds like a brilliant idea.