Getting faster and switching tires.

I started racing my SV650 recently and went from group 4 in trackdays to group 2 (probably 1 soon).I currently run bridgestone S21s, but from what I hear from instructors I will be getting to the limit of them soon. For trackdays I am ok with that but I do not want to be pushing during a race and wonder if my tires will quit on me.My question is, where do I go from here? Straight to slicks and warmers? Or up to supercorsas without warmers? Or something else?I was hoping to not need warmers this season just to save some money. Next season I will be out of college and more willing to commit to a generator or garage space. If it makes more sense just to go to slicks I probably could though.My race vendor is pirelli so I figured I would stick with them. Thanks for the help. via /r/Trackdays https://www.reddit.com/r/Trackdays/comments/buh72v/getting_faster_and_switching_tires/?utm_source=ifttt