One more point to consider is that the ATO may choose to consider such a pilot as a resident for Australian tax purposes. Which means a reduction in Net pay.
This has been discussed elsewhere at length. But IIRC, the general consensus was that the ATO would sting you for the difference.
The tax department says otherwise. But that's the type of research people need to do instead of listening to the 'general consensus' being discussed among pilots who have little knowledge of the tax laws beyond what they read on the web.