...but I chose to ignore your advice
Whats you local EBC?
By headset you mean shifters don't you? I don't mean this offensively in anyway but is English your first language?
I think the man means Edinburgh Bicycle Company - not available in the saarf (yet).
I must admit I was getting confused how a headset limits your choice of cranks but I thought I was just being a bit thick.
Back OT one of the big problems you make get as well as the frame clearance is that you'll be running caliper as opposed to cantilever brakes which will clog up even quicker than your frame.
BTW you should be able to run a 9 speed chainset with an eight speed cassette. Doing it the other way around is where you'll have issues due to the chain width.
Too many hills - too little timehttp://velotastic.co.uk