+1 to the comments re: taking the MSF first, and getting a used bike (and searching for posts on the topic on this or any forum). It's your first bike, not your last. Your tastes will probably change over time anyway, as you discover how you like to ride, and what you want from the bike.
After that it probably depends on your comfort level and squiddish tendencies (if you're new that means doing fun but potentially irresponsible things...a property often observed to occur in inverse correlation to age).
Someone who wants to push the limits should probably select something with a limit that's within easier reach - they say it's more fun to ride a slow bike fast than a fast bike slowly anyway. Likewise, someone who just wants to commute, or a recreational weekend toy, is probably going to have an easier time working their way into something like the FZ6.
If you're looking for justification in getting a 600 as your first bike, the advice will probably be to pick a different first bike, though others have started on the FZ6 and lived to tell their tale.
There's an insane amount of knowledge and helpful people on this board; tell us more about yourself and what you're looking for and you'll get better answers.
Keep in mind that we're all a bit partial to the FZ6
