Look for hobby developers and modders to test the game and come on board. The key feature of a game developer is their ability to work (or lead) a team. Take a look through http://www.gamedev.net/
and see if you can find someone who's keen to join on board.
A publisher would also want to see not only a good concept but a good team. The pitch is really important. Networking is really the best way with which to find a publisher, you need to establish good relationships with publishers well in advance of making a pitch.