I fit pretty much perfectly on a cannondale 54cm frame.

I love the look of Pinarello's, but after looking at the geometry charts, it doesn't look like I'm gonna fit as well on any of them. I'm kind of between a 53 and a 51.5.....I need a 54'ish top tube, 73.5 - 74 seat tube angle, and a head tube of around 14.

Think I could make the 51.5 work? Would there be way too many spacers under the stem?