I have never been to Brendale. Most tracks that i have been to (TFTR, Hobby Habit and the few in NSW) i don't stray to far away from the kit setup. I tend to go stiffer in the side tubes. 20k-40k. and silver side springs (.6) and maybe one softer in the front as well.
Ulti tyres are the go. I prefer the feel of a Hard front and Soft rear in J compound. I can only drive a medium front on some tracks. Personal preference.