Welcome!
Which RS 200 Cup do you have? Clio 3 (three door, manual gearbox) or Clio 4 (five door, DSG)?
There are only a handful of car clubs that regularly run track days nowadays: WRX Club, AROCA, PIARC and MSCA
If you haven't done any track day at all in the past, I highly recommend Evolve Driving for some lessons. They are good. There's Winton on Mon 16 Oct, which is much cheaper compared to Phillip Island. I'm likely to go.