Hi
Apply the names according to the passport is safer.
But if you insist to apply the names different, there will always be a risk.
Don't ask me what's the risk.....I wont be able to know.
It's up to the Australia Immigration.
Take note : If air-ticket name and Australia Visa name are different (does not match with each other), you are not allow to process ONLINE Internet check.
Can only check-in at the Common Check-in Counters.
Thks