Hi. I've been wanting the Persol 649 frames for some time and finally got around to trying them out. There seems to be a general consensus that the size 54 frames are too large for many on SF and it's often noted that 52 is a good baseline. Mostly, I've only been able to find 54s in NYC. I have a fairly large head and a not-thin face. The 54s look to me like they might be the better of the fit, below is an example. Do these look too big to you or do i stand a chance of rocking the Marcello Mastroianni vibe (once properly attired.) Thoughts?