I was in your exact position about 6 months ago. Recently moved into a new house, had my game room finally, had gotten my book and was searching for a empty cabinet or arcade machine that needed a lot of TLC.
I found what I wanted, fixed it up and it is now sitting in my game room playable. I just found my second cabinet a Mortal Kombat II that was converted to NFL Blitz 99. I learned a great deal with my first build and will use that knowledge on this second one. This one is to allow me the things I was not able to do with my first cabinet, trackball, more buttons, spinners.
So yes, more than likely you will be come consumed, obsessed and poorer. I spent some of the hottest months here in Texas, in my garage with no AC working on my cabinet. Something even I did not imagine doing, but there was always one more thing I wanted to work on, fix, finish, etc. Please posts some pictures when you can and also create a thread in the projects area.