Yeah anywhere in the tropics as a general rule. Kimberley, NT, FNQ. Which is the best one to go to changes each year. Darwin sounded extremely busy last year but Broome was relatively empty. This year Broome is packed with pilots looking for work. Plus it depends what companies are doing, expanding, contracting, going to an all turbine fleet etc.
Where to choose to set up camp is a much debated topic. The method I recommend is pick a town you would like to live in that has companies you'd like to work for. The lifestyle of the town is important as it may be months before you get a flying gig.
China Southern out of Jandakot may be a way to go for you, it is a sausage factory and no one I know loved their time there but it served a purpose, relatively steady income, lots of hours and relatively quick progression to multis if you stick around.
There's no right way to go about this, got to pick what's best for you and your dependants and have a bit of luck along the way!