Hi there,
I notice I am the only guy bidding who is actually relevant to what you want, and that is concept art for a game. I am interested in your project and would be more interested to know what you would expect overall for the price etc. You of course sound like the sort of guy who appreciates the creative aspect and also the cost.
Realistically you are offering quite a small budget for something so big, BUT, for your money I would provide you with a considerable amount of work, but we can discuss the overall project further if you need.
Also, I compose music for film and games as I am also a music producer. So that may come in handy in future for you too, since you are planning on making a game :) Please check my profile for a peek at my work.
Feel free to message me and discuss things further.
Thanks,
Simon