Adding active cooling and need your inputs.

[printbus]

Also it is missing the terminal block where you can screw the wires directly onto the board. Does anyone have an idea of where to purchase this piece or what it is called?

"Pluggable terminal block" is how I've looked for similar parts in the past. In the USA, Mouser and Digikey would be where I'd start. In the UK, someone like Farnell. You could inspect the orange plugs for any kind of markings that might suggest a brand. Judging by appearance, the orange ones appear to be WeidMuller BLZ 5.082 a ways down on this page at CPC/Farnell - http://cpc.farnell.com/1/3/terminal-...w-socket-block. Can't help with the other questions.