They beat me to it.

So there I am, designing the drive bays that I'll use when, while searching for information on correct sizing of 5.25" bays, I find that MountainMods has almost the exact same design

Here's what they did:

Here's my design:

The seem almost the same to me. Well, I guess that part's done. I just wish they didn't charge $34.99 for one drive bay..