Any question answered...

Ok cheers.

One other question, ive just noticed the 2011 Allez comes with Shimano 2300 which have the thumb downshift? Ive heard terrible things about it, would it be difficult to replace for a normal style shifter?

I've got Sora shifters on one of my bikes which are essentially the same - It's fine if you spend most of your time on the hoods, as it's not really possible to drop down gears whilst in the drops.

I'd avoid 2300 like the plague tbh, it's cheap and nasty, still has square taper cranks instead of the hollowtech like the sora. I'm with dammit on the 105 suggestion, if theres any possibility of stretching to that (there will be some good deals over the next few months as the 2012 models start appearing) The quality is much better, and your more future proofed.