A couple updates.Side Panel
I ordered a piece of light gray tinted tempered glass to replace the acrylic window that I scratched. Unfortunately, there was already a scratch on the glass when I opened the package. I'm hoping they'll replace it free for charge. Everything else is ready to go. I cut the tabs that held the acrylic window off and painted the panel again to hide any scratches from when I kicked the panel across the floor.
I was going to just just double sided industrial strength tape to tape the glass to the panel, but I decided that I may want to paint the case white this summer using automotive paint, so I bought ten 12mm diameter x 4mm thick neodymium magnets instead. The panel opening has a 3mm thick inner lip that was a part of the structure that held the old acrylic window. The magnets are just thick enough to come above the lip. The tempered glass will be glued onto the magnets, giving the window an offset look. To keep it from sliding, I found some L-brackets in the spare parts drawer that I painted black.
If anyone is wondering, this is what I used to paint the panel. The match is pretty spot on.
I also moved my steam library onto a 1TB SSD, and now all 3.5in HDDs are in a Mediasonic ProBox, which is an external 4-bay HDD enclosure. It's sitting inside my desk, so I don't even hear it when the drives are spinning. No more spinning drives inside the PC case.
Also, I ran the SteamVR Performance Test. I'm happy with the results.