Unfortunately the processor was severely corroded, and when it touched its legs, it ended up breaking.
I think I found a somewhat workable solution: I have an old ibook g3 500mhz dual usb that suffered an accident, and the only good thing left on it was its motherboard. I will adapt it to the case of the performa by adding 7 USB ports. It's not perfect, but at least it will keep close to the time and run what I wanted to run on it.
Problems and solutions:
CD drive: I don't want to use a laptop so I'll use an IDE/USB caddy to use a desktop dvd drive.
USB: It only has 2 ports, but I will use one of them for a USB HUB with external power.
Power supply: I will acquire a 24v 1.9a that will be inside the case. It will also power the USB hub.
HDD: I will keep the IDE 2.5" HDD, I will just use a 120GB one, perfect for maintaining compatibility with OS9
Cooling: I will use chipset heatsinks under the chips, and the original performa cooler will do the trick.
Volume, led, and power buttons: Everything figured out.
Loudspeaker: It doesn't take a long time to know how to connect it where the lappy's loudspeaker was connected.
Monitor: The ibook originally doesn't do desktop expansion, just mirroring, so I'll have the boot screen on the VGA connector. The problem is that mirroring "splits" the vram in half for each monitor. But I learned a trick via openfirmware that disables the internal screen, releasing all the vram for the VGA.
Floppy drive (auto eject): I still don't know what to do with it.