The bottom of the valley at Canungra can be a frost trap. We hike O'reillys a bit and it definitely gets cold in canungra. It really cools off in the valley because you lose the sun early in winter. You'd want your tender stuff on a north facing hill I'd think. Maybe direct seed some of the more sensitive ones and graft over the survivors. I imagine Mango, Banana, Jabs, Citrus, low and low/mid chill stonefruit, low chill Kiwi, black sapote, Mulberry, Guava, Loquat, Nashi's, dragonfruit, pitanga, some garcinias would be fine without protection. I've seen jackfruit that far inland but they didn't look to stellar. If you direct seed I'm sure you can get scions of most of what is around here from Dan or myself.
Rob