You don't mention heat cycles. Heat cycles are as important or more important than tread wear. You will get no more than 15 heat cycles of out of a set of track tires before the grip is reduced to a point that normal on track driving may lead to a tire wall detour.
You typically get at least three heat cycles per track day, maybe more. Using an average of three heat cycles you get 6 track days out of a set of tires. You can run the most aggressive ZLE alignment and those magical GYs will heat cycle out before they wear out.
FYI -- the faster you get on track. the faster your tires will heat cycle out becuase they get hotter.
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