Nice work Travis!
Any updates on your 5ghz goal?
I have a very similar set up to you, with more of an extreme watercooling than the conventional (using TEC's).
I also have an Rampage III Extreme Black edition and have an intel i7 990x in it. Im looking at getting it up to 5gh but no luck so far. I can get it to post and boot into windows, but it fails on the stress test when i run OCCT 4.0.
I am really looking forward to your 5ghz stable attempt.