+1 to what BSG and Bluetree said on the custom fabricator offering recommendations based the your measurements and the geometry of the bike that will be built for you. Also many of the lbs/builder here offer a discount on components when they build a complete bike. The discount is usually enough that it's cheaper to have a complete bike built vs. buying components piece by piece. The bonus with that is that they'll swap out components at no additional charge (unless it's an upgrade) if it's not quite the right size/fit.