The current trend in CX bikes is actually toward lower BB height and relaxed HT. If you're near a Bianchi dealer, the Concept has the same geometry as the Axis; if you're not riders who own it have commented on the fit being very similar to standard road bikes, with a slightly sloping top tube.

I'm in the other boat: almost 5'7 but with a long torso. I can ride a 52cm but I also tend to push the seat back a bit on many bikes. Classic geometry for me is usually 50cm, but most modern bikes are a bit of a puzzle.