Novice building a roadbike from scratch.

[festival]

You seem the kind of person who will enjoy the process and will learn a lot from from it but unless you have someone to hold you hand its guaranteed you will either make lots of mistakes or be back and forth to the LBS for bits you need, help and advice.
Here's an idea, why don't you have a chat with your local bike shop and ask if you can watch & help the mechanic put it together for you.
Most shops won't like you sourcing from elsewhere, and may charge a premium for fitting other peoples parts but if they are a decent shop you will get the best of both worlds. You hint moneys not an issue so talk it through with them source the goods through them and then let them talk you through the build as they do it.
Having said all that you really would be better buying a complete bike, maybe customizing it, from a good shop and learning about how a modern quality bike works over a period while cultivating a strong rapport with them.

 

[Monsieur Remings]

There is one other angle to consider, and I am a novice, I don't mind admitting.

I remember that Planet X were selling a full carbon frame set-up, presumably with their own wheels with a SRAM Red groupset for around £1300 some time ago. You could never do this buying the components separately as others have suggested.

But, when you're building your own bike how will it really differ from a bike that's put together by one of the big manufacturers? On the plus side, you'll decide what you want to use but to counter this you have things like the Ribble Bikebuilder, again at a cheaper price. Also, when you buy a whole bike there are sometimes reasons why their kit is sold with certain combinations - sometimes it's because there's a good groupset or frame and so they have to skimp on something, let's say the wheels. On the one hand you won't have to be constrained by that but you also have to see that a lot of these bikes are put together because the firm know that each part will complement the other through experience of use on previous models - say, a Ribble frame with Mavic wheels. Perhaps the knowledge of these combinations is a bigger deal than you might think....

Just a thought. R and D is important to the big firms and when deciding on parts for this or that model, such knowledge and experience, which you won't have, is undoubtedly an important part in deciding on this or that combination.

Good luck either way.