The difference between a literbike and cb750 is like a model t and sportscar. Maybe not quite that extreme, but close. My fz6 would easily beat my cb750, or any cb750 on anything. The insurance alone will be a killer since people can't seem to help but stunt and crash, it seems. So, instead of a crotchrocket, I'd do something more like the fz9, Aprilia Shiver, or something similar. But then, I tend to avoid plastic bodywork and overly complicated bikes. Btw, the 04-07 fz6 bikes are good bikes, if lacking in the character dept some. I would also consider a Triumph, if you can.
The ride IS the adventure. The destination is just to get gas!