Great heist, nice clear walkthrough.
Just a couple of corrections/additions:
Step #3: lookbeyondthered.com actually has three different messages (keep refreshing to see all three). The one you forgot to mention, when read from right to left, bottom to top, is: "pulsing lights turn into one."
Step #5: You can call that number from any phone, not just through Skype. Alternatively, you can skype to Macheist (I found that out, just by dumb luck, before I had figured out the number).
Step #6: The phone/skype message is slightly different from what you wrote. It says: "Find the image tagged the scarlet letter. Use something delicious if you need help."
Loot can be nice, but it's the heists themselves that are my fave...