Just as I was about to get back on this project, I'm finding out that I have to move, again...
I opted to have the first PSU provide the negatives. -12 isn't needed, but I believe that -5 is still in use.
The MOSFET should be reversed. That'll all I remember for now, sorry.
Maybe in another two months I'll be able to finish this darn thing... In the mean time, I bought a cheap 550W psu (which has a bad 3.3v line
).