End result and test
Once you completed all of those steps you have a fully functional and completely silent PC. Ours looked like this:
The can just make out the SSD behind the optical station. There aren't a whole lot of options for hiding away wires, but it doesn't matter so much since air flow is not essential here.
The question is how warm will this system get when it's up and running. We used an AMD A4-3300 CPU, which has a TDP of 65 watts.