Clever writing, got a good droning feel to the main melody since it keeps going back to the same note, then you hit those fast single notes in a dropping pattern and WHAT DID I HEAR? 7 STRINGS? WHAT?
This sounds awesome, I need your secret! Maybe if I know it, when I record an actual 7 string guitar I can make it sound like a double 7 string guitar... Wait that's 14 strings. O.o
I wouldn't say you attempted - you succeeded.