I'll tell you 2 things I've done to get really good performance:-
1. No insurance.
2. All index funds and 100% stocks. I think I'm 2/3 international and 1/2 Australian.
Insurance is an individual thing. I don't have any life insurance for instance but you have to look at your individual situation.
Assuming you won't access your Super for many years the rational approach is 100% stocks. I actually think you shouldn't have any Australian stocks. It's a tiny blip on the market. I'm hypocritical here though and I don't see a big issue.
My wife is in the same Super fund as mine and she has underperformed because she went a 70% balanced fund.
unfortunately PSSAP only have cash, income focused, balance and aggressive or something along those lines, can't choose where or how they/you invest