Final update!
Christmas came early- the machine shop just finished making the front panel, and I am liking the way it turned out. I like the contrast of the brushed aluminum against the powdercoated steel. I might do a light anodizing in the future, to match the K810 keyboard I'm using, and I've ordered some button-head screws to replace the ones currently holding the front panel on, in order to better match the look of the power button.
Here's the link to the OnShape files, in case you guys would like to make a variation of your own. I also have a wider version of this design, which should be able to accommodate some beefier gaming video cards, but I have to look for it. I'll send a link to that if anyone's interested.
Thanks again for your guys' support! And huge thanks to Protocase and Iggy Unlimited for helping with the production of this case. This project taught me a lot, and I hope to do another in the near future.