Yeah! Good luck!
I had heard some years back that 3D printing was going to revolutionize industry from manufacturing to building houses.
I read an interesting article that predicted that many parts will not be built and shipped in the future...they will be printed at the destination-even in your house.
I saw a cool video that showed how to use 3D printing to create a mold-I find this entire endeavor very exciting.
Right now you can do very short runs with 3D, because of cost and speed. But the key now is being able to prototype molds quickly. Long term, who knows how fast or cheap it will get.
Injection molding plastics or die cast metals would be hard to beat for speed or price. BUT you have to figure transportation costs and flexibility in too. EXPENSIVE to modify injection molds.