Those caps look horribly soldered. I was tought that they should be seated onto the PCB, avoiding rocking which can crack the leads over time with vibration. Or am I wrong?
Nice design! Interested to see where the cost lands.
If I've got it right the Silverstone 180 fans need to be exhausting so that the fan guard is on the outside? For a vertical arrangement I guess one fan exhausting at the top would be almost ideal anyway but not sure how horizontal with two fans would work?