thanks for all the advice - as far as i'm aware the stays can't be cold set due to having less flex than 531.
I'm definately leaning towards Dura ace for this build - is 7400 compatible with 7401/7402 ?

Wheelwise how does this sound? Dura ace 6/7 speed cassette hubs laced to campagnolo omega 19 rims (black) with veloflex pave tyres (black and tan).

What should i be looking for re: brifters / shifters?

cheers