Do you have a crane and a big window upstairs?
Unfortunately, I don't think taking it apart will be easy. It is not likely "bolted" together. Its probably glued and possibly nailed together. To remove the sides, would mean taking the entire thing apart and rebuilding. And at that point, building one from scratch would be a better idea (my opinion).
Do you have a wife that would be opposed to an arcade machine in the kitchen?
In any case, good luck. It looks like a nice machine to start working on. I'd be very excited about it as well.