For simplicity sake, since its my first go and all, I went with Yooper's recommendation (slightly modified):
5 #s Breiss "Special Dark" LME
2 #s flaked barley
1 # black roasted barley
2oz Kent goldings
I am definitely keeping the other excellent recommendations though including your obsidian. If this is a success, that will probably be my next brew.
"Always do sober what you said you'd do drunk. That will teach you to keep your mouth shut." ~Ernest Hemingway