hey Ian this is becoming a track tyre thread, lol
we should have a track tyre thread as a resource for tyre options, its too expensive to try every option.
i recommend toyo 888 for the occasional track day hero as you will learn plenty and still get about 10 track days out of them making a track day cost 200 in tyres plus the day. it adds up pretty quick. but i see no cheaper option.
edit + you can swap over the fronts and rears as EC will waste the rights quickly