Dude you're new and maybe don't understand. If I were you I would just take down those pictures as soon as possible and lurk around some websites out there and learn as much as you can on your own. Those pictures you've just shown will be looked down upon. You have a classic arcade cabinet in very good shape that has holes drilled into the control panel, and you're planning on finishing it off by turning it into a MAME cab. People who are into classic arcades do not like seeing this. Here's an example, if you really loved classic Corvettes would you like seeing people taking a classic vette and turning it into a demolition derby car?
I could go on and on about this subject but I think I made enough sense for you to understand. I'm just trying to save you from an onslaught.
Just do your research HERE and don't show anybody else what you've just posted!
Also just wanted to add, I have converted a Joust cabinet into a MAME cabinet, the cabinet I had was a lost cause, side art was completely sanded off, control panel was cut in half etc. and it still offended people. Your cabinet is in great shape and it's going to upset people even worse then my situation.