Awesome!!! I love that case.
I got the Firecuda drive, as well, back in February when I built my MAME machine. There was a killer deal on it. My boot is a Crucial SSD. GameEx Arcade runs seamlessly on it.
When I got it, I figured the hybrid feature would begin to remember files such as my EmuMovies stuff and load it faster. The IT guy at work, though, said that hybrid feature only really begins to show itself when the drive is used as a boot drive. So I'm not sure if I'm getting any advantage from it as a storage drive. Oh well, it was a killer deal anyway.
Again, great build! I'm envious.