Dude, I'm going to offer you some practical advice, but you can feel free to ignore it. You said your wife is already mad at what you've built so far, and I don't think you're joking about how mad she really is. Make things right with your wife about this hobby first, or else I think this is all going to end in tears. Those of us in this hobby that are married probably have wives that, while not completely understanding of this obsession, at least are on board with what we are doing and accept it. Make sure your wife is totally cool before you start adding more machines to the mix. It's no fun having a wife that resents your hobby. You'll never be able to share it with her.
/Cue somebody telling us that getting divorced was the best thing that they ever did.