+1 for #3
Also, +1 on the LCD. I'm using a Dell 24" 2405 LCD and am quit happy with it. No, it's not exactly like the arcade monitors, but it's pretty close, and it's got the res to handle games like GridWars, as well as Future Pinball and Visual Pinball., plus Stepmania.
If I was building a standard cab dedicated to just the classics, I might think a bit different though.