If you absolutely insist on a 600, try the SV650 (SV650S w/ lower fairing for the "fast" look), or an f4i. Better yet an older f3 or f2. Todays 600s are more powerfull than the liter bikes of late 90's. Just how are you going to feel when the bars start wiggling from side to side when you exit a corner? Or when you downshift and the rear tire locks up and slides from side to side?
Operating a bike doesnt take a genius, but it does take expirience. A responsive bike like a race replica is only going to give you one chance to make the right imput, after that its going to throw you off. And I'm sure you know that there is a difference between knowing what to do, and doing the right thing instinctivly. I'm not saying you arent worthy of riding (or anything like that, I know this sounds condicending, but it isnt) just spend a few thouthand miles on something abit less deadly.