That's got a seriously cool vibe. I think it could do with a little variation though. It may be worth looking at changing up the orchestration a little more. At the moment it gradually builds over the course of the track, which is really effective in the beginning but the last few changes are a touch subtle for me. Possibly drop back to something very simple for a verse 2/3 of the way through then crash back in with full sound.
I watched a 12 Tone video this morning that might be interesting. It's 'actually' on 4 chord loops so it's not a perfect match but I think that a lot of it applies.