Since everyone is acting all srk about shit I will actually help.
Orlando is a great place for something like this. 2 reasons. 1 is it is a great place to visit from a florida stand point (I live in Jacksonville).2 is, there is a huge scene in south and central Florida and when they have a god place to meet and fight it makes them way more hungry.
Since you are not worried about money, do not worry about getting in contact with anyone for anything. Serious, just make the place and promote it like you are looking to. People love to play games in that part of florida, and they will drive if they know it is a good place. Getting involved with FGC politics is just stupid, fighting game people will show up, no worries. I am not saying to try and split the scene in any way, but those two scenes are actually rather large with many casuals looking for another place to level up. I am saying do not cater to the core of the FGC, instead go after them all since you have the finances to take a loss and only help casuauls players for the first 3 months - 3 years.
About cabs tho. Most if not all cabs are running on that ultra cab type thing. You buy a cab but it is empty inside and you put in the system you want to run on it (XBOX360/PS3/Wii/PC) the monitor (ASUS/Hi-Def/CRT) and the sticks(Mostly MadCatz TE’s of some kind, but people do like Hori Sticks and the Injustice Sticks By PDP/Quanba). If you look at the new arcade in Texas that is how they are running most of the games, while they did go vintage with some cabs, like you are finding out, they are just hard to come by. There are Korean and Japanese sites to order them from but I am not familiar with them at all.
Really just going to the american arcade cab site to see the cab itself and know what direction you are going in will help lots.
That is the arcade in Texas that just opened and they are still adding old school cabs (coin ops) as they find them, but they made sure to just have the core of their initial setups be those X-arcade “type” Cabs. They had a theme (Killer instinct Ultra Arcade) so they made sure to invest in those coin ops (KI 1 and KI 2) for opening but they continue to build on those types of cabs all the time.