1600 hrs, especially since most of it is turbine, might have been enough for a foot in the door in the last year or two. You might have missed the bus though.
The global recession is having its effect. There are more experienced pilots starting to look towards PNG again. Something they didn't need to do in the last few years.
Nobody knows what is happening up there in the future. Will investment in oil and mining falter, or will it carry on in anticipation of the recovery? Will the proposed LNG pipeline happen, and give a shot in the arm to industry?
Only time will tell. Good luck.