Are you kidding me?? You got a Egret 29 for $60?! That's incredible, nice find!
To find another control panel will be tricky, my advice is to keep an eye on yahoo Japan auctions as sometimes rare prices like this goes up for sale. You could also try PMing richy13 at the Arcade Otaku forums as he procures a lot of candy parts.
You can probably replace the metal cp plate, I believe Jasen does repros, and you could try asking him if he can do the Egret 29:
https://www.jasenscustoms.comHe's a member here too.
Painting it is the best way to go to get it minty white again.
There are a few restoration threads at AO that you can read through to give you some ideas.
As for the monitor, that's going to be tricky. They're Nanao MS8's, which could be found in Daytona cabs. Might want to ask around on AO or KLOV forums for that.
Good luck with the restore. Those Egret 29's are extremely rare, and a very sought after cab. Especially with the ability to easily rotate the monitor.