I have a big PC monitor I really like in my cab. It's great. It's clear, and it was simple to hook up. I have another system that has a 27" sanyo TV with SVideo out, and it's good for playing games. It sucks for anything else. It's hard to read the text no matter what I do to it.
I used a geoforce card because it was cheap. I got it at the computer show. I got the TV at the spirtual and geographical center of the universe, Walmart. They have those component converters from about $15.00 in the wiring section by the CD's.
I don't have the lightgun for the TV, but I have it for the PC monitor. It's okay. I think it flashes more than a regular arcade gun.
Bezels are always a problem. You can order them at
www.happcontrols.com or
www.wicothesource.com. There's an excelent section in some thread here called $2 bezel. You might want to try that, you can make custom colors that way and it's not that challenging. A bezel for a TV would cost well over $35 and shipping.
For Art, there are lots of places. Check the artwork section here. I never tried Kinkos. I printed most of my stuff out with sticker paper you get at office depot. It's more fun that way to me, but I like bumper stickers.
I have tried building cabs, I built two of them. One an upright I never really finished and a cocktail I never really finished. I made two other mame machines out of cabs I got at auctions. That's the best place to find dead cabs. Check
www.gameroommagazine.com then show dates for the locals near you. Bring your cash and a pickup truck with plenty of straps.
Trust me, it's easier to take a dead stipped cab and convert it than building one. It's all there and you can get a pretty decent one for under $30 if you are lucky. It costs a lot of money just for the tooling to build one. The tool to cut the T-molding is over $35 shipped. Not to mention all the little pieces you need.
Ebay is a great place to get buttons and joysticks.
The important thing is that you are satisfied. Some people are pretty picky about their cabs, and proud of the work they put into them. If you are like that you will get a great deal of satisfaction from building. But if you are not handy it could be a very frustrating experience.
If you read the examples pages you can determine pretty quickly that some people should not be allowed to use power tools. It takes some skill to map it all out and several weeks to finish it.
I thought the $20 bucks I paid for the dead cab and the afternoon I spent painting it was much better than looking at 1/2 finished cabs laying around.
Good luck and welcome to the wonderful world of mame.