I`m 188cm and like Drop on a large with 70mm stem and crazy-wide 785mm bars. Feels beautifully roomy. Remember that torso/leg ratio is a crucial factor when considering frame size: two identical-height people may need different frame sizes. I`ve got short torso/long legs, and the Uzzi lets me sink my 410mm Thomson post low enough; the thing sticks up really high when I want full leg extension. The wide bars compensate for my rang-o-tang arms...
If you`re the long-torso type the tt might be short, but if you`re like me, and just 2cm taller, I doubt it would be a problem. I was able to test ride a large before I bought my frame, and that test cinched it for me. You should really test ride before buying a full build like that!
Just a thought, but what about the T29?