Yep, that bike looks awesome, I would go the powdercoat route but need to keep the costs down, my firemountain is bare aluminium, I like that if I scratch it I can just polish it, it doesn't ruin a £100+ paint job, I know steel is higher maintenance but I would be in the same boat with the hahanna and rust inhibitor, it will also look just how I want it. RAW!
Only thing is I think the hahanna is going to be for the mrs, I'm not putting discs etc on it I want to keep costs down, but for me raw aluminium vs raw steel, steel wins! I can see me riding it more than her!