Thanks for the reply!
Are you planning on buying a Cento tubeset and holding onto it to build with once you have more experience?
You got it exactly right! I saw the Cinelli Nemo Zagato and fell in love with that tubeset. And as I am a big fan of Columbus/Cinelli, I have a fear of missing out on this limited edition, so I want to buy the tubeset now and "freeze" it. My full plan is: full course at the bike academy in March 2020, then a few builds for friends with cheaper tubesets, and only after that, the Cento!
I will go for Measure A then, with 530 TT. Thanks a lot!