Ok granted Ive been away from the hobby for awhile but back in my glory days I had 3 cabinets roughly 40 boards and an equal of marquees. Ill add to this post depending on the response but a few basics.
1. GO JAMMA! Jamma is well as close to a universal standard as you could get in the mid 90's That means if you had you heart set on SFII or TMNT then your in luck you only need one cabinet, as Jamma allows you to change the boards much in a plug and play type fashion, the only difference being the number of buttons you decide to have on your control panel. (Most homemade are set for 7 as you can swap multiple games in without having to change the control panel every time for 3-6 button games.)
2. Dedicated Machines are a bit trickier, mid 80's games are almost all dedicated, meaning they need there own special/customer hardware and cabinet. This is not to say you cant make a 4 player TMNT into a Donkey Kong, (Why would you really want to though?) its just trickier as that requires a good degree of custom work (Wiring, wood cutting etc.) But we all have our "jones" and the crowning jewel in my former collection was a Tapper machine (By far and away one of the best bar games EVER and Im not biased just because I work in a nightclub/bar
More to come? You tell me