Oh man, be careful with the mesh smooth/subdivision. That's a really good tool for animation movies, for games, however, it is the worst thing you can use because you won't have control over the amount the polys of your model... I got told this by a professional 3D modeler that made models for Need For Speed Underground. It's a royal pain in the a$$ when you realise that you've added too many polys and now the games runs at 3 FPS.
Didn't the document about game optimization talk about that?

Remember, just an advice...