There is HEAPS of work in Darwin to keep you going until that flying gig comes along. This also applies outside of Darwin too. However please note it is VERY expensive to live up here. $90-100 for 2 bags of grocerys, $200+ a week for a room, the caravan parks are all full etc.
However do not let this put you off. You've spent all this money and effort getting to where you are, so whats a bit more? Just another bit of your investment in yourself really. And one last thing...don't exit that GA job until you get your ATPL and 500 twin. Far to many blokes are currently stuck in the right seat that can't get upgraded easily because they jumped to early. The blokes that now come in with those necesary hours are moving past them because they were willing to stay in GA that bit longer.
Either way enjoy it, 'cos punting a computer from ILS to ILS does not generate the war stories you'll tell your kids