Would hillclimbs be less taxing on the car? I did one, you do need to splash out on a helmet, stickers and a fire extinguisher, but its also a pretty cheap motorsport.
I cant really see the value in hillclimbs. For the fee of $80-100 you get 3-6 runs which take about 40 seconds each.
Thats only a few minutes of motor racing for a lot of coin. Compare that to a track day at Mallala and for the same cost you get closer to an hour of track time. Sure its not timed or in competition, but its heaps more track time.
You went to Collingrove Dion? Any of the EVO guys there?