1) Wrong Forum!
2) Go look on turbosquid or another free model website
3) Every newbie has a game idea that they think will make them a millionaire. Never gonna happen.

Don't mean to be harsh but i doubt many people are going to do this for you. Maybe if you present your game idea in an appealing way and then ask for people to join your team, then maybe you will get somewhere.

Even if you did use other people's media, you can't publish it as that is breach of copyright. You would have to ask strictly for commercial use.