So, now that the learned mass have spoken (much appreciated btw) I will toss out my thoughts.
Liter bike is too much, I will overuse the power and make the learning curve worse. A pure 600 sport is the best answer but I already have the FZ6 and it's in great shape and a great bike. There is no reason why it can't perform pretty well on the track. Perfect, no, but it is a great platform.
Plus I have it, a few clicks on the interwebs and stuff will start showing up at the door.
So I'm leaning (pun intended) towards adding a rear set, forks and rear shock to it. Rear set is mandatory the pegs are just too low on that bike to the point that if my feet are not in exactly the right place I drag a boot before I drag a peg. Fork work and rear shock won't cost much so why not.
And as several people mentioned my lack of smoothness is a big issue here, there is no doubt when I slid it I got on too hard too soon. And yea body position is still rough, it got better after lunch but still has a long way to go. Not being smooth and improper body position isn't going to be fixed by a new bike.
I am turning low 2 minute laps after two trips to the track with damn near zero experience on a sport bike. I am quite ok with that.