He there! Welcome to the forum!. I'm pretty much the resident expert here on all things Mame, although I'm far too modest to post my best work here like some of these fellas.
I'll try to answer your questions as truthfully as I can, in the order they were posted.
5. Controls. If you want to play the broadest range of games, I'd recommend at least 10 buttons per player, plus start and coin up buttons. Now I've seen a lot of people doing silly things like arranging their paltry little six button configurations in neat little grids, but I say, that's not the way the mind works. You want to experiment. Drill a few holes in your Control Panel! You can always patch up the mistakes! The important thing is getting the buttons where they're comfortable for you. Personally, I'm partial to Putting eight buttons in a hexagram shape, and having the remaining buttons installed at toe level to use as the L/R buttons should the need arise. This doesn't work for everybody, but I'm pretty dexterious and wear sandals all year round. The bottom line is you have to do what's comfortable for you!
Guns, I'll be honest with, I don't have much experience with. One of these other guys could probably answer your questions a little better regarding light guns.
Trackballs are important. Notice I said TRACKBALLS. I've seen too many cabs on this forum with one little ball in the middle of the panel, which to me is an eyesore. Might as well call the machine the "Armstrong Arcade" and throw some Livestrong bracelets around your joysticks at that point. The thing to remember about trackballs is, more trackballs= better.
Your eyeballs aren't located in the center of your head are they? Hell no! Best advice is to put the trackballs in the middle of your P1 and P2 hexigonal button layout. This completes the mystical circles, and that's when the Control panel magic really starts happening.
4. Computer power.
There's two thought processess in this forum regarding computers. One side runs them on ridiculously underpowered PCs. Like a 386SX underclocked to 10 Mhz. Now, that might be ok for some of the classics, but I lean towards the higher end school of thought. For myself, I'd never put anything less than a Pentium 166 MX in my gaming rig. Now I know a lot of the people on this board are going to complain about computers like that being out of reach of most people, but I worked for 3 years cutting grass and shoveling snow to afford my rig, and I couldn't be happier. Check into the Packard Bell brand for the best off-the-shelf computers. They're not the prettiest, but they have nice innards. You shouldn't have any problem running 99.99 % of MAME games with this, and if you throw a 16 MB Voodoo 2 video card in the beast, you'll be able to handle games like SFIV with 4x AA and all the visuals maxed.
3. The monitor, to be honest with you comes down to what you prefer. If you want honest-to-God arcade realism, then CRT is the way to go. The downside is that it's hard to watch adult videos on a CRT if you install a video jukebox along with your front end. It really comes down to what you want to sacrifice-arcade realism, or your hi-def "collection".
2. It's pretty obvious you want to play the most amount of games. That's why if you install the twin Hexigon setups with the trackballs in the middle you're already almost there. I'm sure that somebody else can help you out with setting up the light guns. one thing to keep in mind when listening to some of these posers is that no matter what they tell you, you WON'T need a lightbar above your screen. That's just pure hokum to sell a worthless part. The dealers always try to upsell you on stuff like that. If you're perceptive, you'll avoid obvious rip-offs in your day to day life and only get the essentials. Like when I bought my car a few years back, I told the dealer I didn't need the airbag since I'm a very careful driver, but I needed the invisible rust inhibitor they spray on the underside of the cars to keep them from rusting. Best 920 dollars I ever spent.
1.
Man. I don't know if you're going to be able to keep the entire thing in your budget and still get all the features you want. The problem with builds where you want it all is that you wind up getting nickle and dimed to death on the small things. You might be able to get by with with a little less if you're dead set on staying inside your budget. Matter of fact, I think I can hook it up.
for 1000, I'll send you.
1. Packard Bell Pentium 133. (No MMX, sorry, but still plenty fast) I'll throw in the Voodoo 2 card for 200.00 extra.
2. (2) joysticks and eight buttons
3. 13" SVGA CRT monitor. (You'll be able to play all your favorites in their arcade glory on this bad boy)
4. (2) AT style keyboards for you to tear apart and hack into controllers
5. Some black construction paper to make a bezel out of. It's got some crayon drawings on the back, but no worries, you can hide that by flipping that to the other side!
So what do you say? Do we have a deal? PM me and we'll work out the details.
Oh, if anybody's interested, I have a slightly crash damaged Toyota Corolla with a flawless interior and no rust damage! Make an offer!