Thanks for the comments and questions!
The anti-glare screen is actually a really cool idea. Don't think I could have found one the size of this bezel, but thinking of the ones I've seen in the past, the look of them is just about perfect.
The marquee lights up just like a real one, but the camera doesn't capture it well. I'm sure there is something I could do to get that right, but I'm playing games.

The starting point for my stick decision was that it have a red balltop. I'm sure the Ultrastick would be fine, though I have to say I really like the Sanwa. It has a great, light crisp feel to it.
I might build a base for this when I move it out to a room I'm redoing. If I do that, I'll get a real coin door for it. There is really no place on it currently that they'd look right. I set Defender and Stargate for freeplay, I do have a recessed credit button on the side of the cab for stuff that doesn't have freeplay toggles.
I'm sure you could find a build of MAME that would fly for classics on a P2-300. I'd start with .37. Your P2 is better than the main computer I had when I discovered MAME and it ran the .3x versions great.