Cinelli Vigorelli 2010 (with paint stripping)

Smallfurry seems to understand what I'm getting at. I've found a picture of a Vigorelli with an internal headset on it (or so it appears). This is the 2011 model but I assume they won't have done any tweaking to the design of the headtube in terms of its capability to use an internal headset.

That headtube looks different to yours. Not easy to see though. I'd definitly look in to it if I was you. I still dont think its doable.

FTR I think the bike fits you. If you went with a bigger size you would'nt be able to get the bars so low, and thats not a massive amount of seat tube for a semi-compact frame geometry.