Yikes man! I wouldn't want to machine something like that,there wouldn't be any money in it for you to resell, lol~

That is a pretty detailed design, looks like you need to find someplace that will cast wheels for you. Just a quick FYI, your design isn't balanced but I'm assuming you would pick just one of the three spokes on it and stick with that design? The inconsistencies are near the center of the wheel so you might get away with it with minimal balancing, so you might be fine. I've made imbalanced brake rotors several times and gotten away with it because rotors have such a small radius verses the wheels. You have a similar situation here.

Just stay away from undercuts and you should be fine. It looks like "tooth sockets" in the "jawbone" looking thing might be powder coated black to get it to look recessed?

Crazy design, I wouldn't want to have to keep them clean...good luck!