Well why don't we work on that? Especially seeing that you still haven't (we haven't) even been able to come up with so much as a frame to start the build with yet. A total budget is nice but I for one would like an idea of how the budget should be biased. I mean... you could get a frame from Nashbar... and bling it out with Shimano Dura Ace or SRAM Red; or you could get a custom frame from Leonard Zinn and put Shimano Claris on it. Well Claris is a road gruppo but you get the idea.

Having the LBS press bearing races into a head tube, or face the bottom bracket for you wouldn't raise any eyebrows. IMO you should be able to do every single operation besides that yourself, if you really are going to get into a bike build. I never did learn how to final tension and true a wheel, but as a teenager I did build (lace) up a coupe of tubular wheels and took them to the local wheelbuilding guru to finish. I got a pass because of my age and obvious enthusiasm. I'm not saying you need to know how to build wheels, but wheels are important. What is your wheel budget?

I think I am going to have to join the chorus of "buy a bike" posters. Yep. PC's are one thing, a bike is quite another. You might be outside what is usually intended for an XL frame, but not so much so that it should be a deal breaker. Given your budget you must be able to find a bike for your 6'5" self. Must. Otherwise, call Leonard (Zinn) and ask him to sell you a frame, and what you have left is what you have left to buy components (and wheels) and then you have your custom bike. It doesn't have to be any harder than this.