GF, either RAAF DN or BN Centre, however BN CTR would be preferable given the poor standard of Flight Information Service+DTI provided by the RAAFie (assuming she was RAAF) on the night in question.
The service would be the same as that provided at hundreds of other standard Class G+ plus CTAFs we have in Aus.
But as I said before, I suspect that Internationals can't/won't operate into Class G/CTAFs (International JQ was inbound just after this non-event) so the powers that be had to come up with something else (that ended up being more convoluted).