It's not the tires that you ride, it's how you ride the tires. A lot of people (myself included) get all wrapped up in the great tire debate. Just pick a tire and stick with it. Get enough track time and sneak up on the limits of the tires so you know what it feels like, then go to the stickies. I ran the BT-016s with no warmers my last 5 events last year (07 zx6r), and will continue to until I can get that feel of adhesion.
I found 29 front, 29 rear hot works quite well for wear and grip. They only take a couple laps to warm up. The only sorta complaint about them is the rear edge compound gets gooey on high track temps, but it's smooth and predictable.
I run mid-I group times.