Well you can just about do it with a bit of trigonometry using their geometry chart.
No user info here, just a bit of critique of the design, looks a bit bodged together using some strange ideas. I think there are more aero solutions out there for the same money (only prices i found were €2750 for frameset.)
EDIT(excel error before!): stacks are 518,532,550,570,595 approx
My gripes with it are the top-tube headtube interface, its a mess to generate drag, the rear mounted brakes leave a messy cable routing in the air, and the curved fork blades extend the leading edge into the clean air.
Personally i don't get the angled seat tube design, but i guess that could be forgiven.
My favourite TT bikes at the moment are (uci legal versions) :- Canyon speedmax, bmc tm01, speedconcept 9.9, P5, Scott Plasma3
a good tririg omega with good routing will be a better front brake than the TRP rear mount brakes. (data here http://www.tririg.com/articles.php?id=2 ... hite_Paper
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OR nosecone shiv for uci illegal if you can find one.
Obviously getting a frame to fit is the best, then getting an aero one is important!