If you are serious in your inquiry then I make two points:
Firstly, don't go instructing - you will have only the barest knowledge to impart to a student and will only be regurgitating what you have been told, most of which your instructor learnt from his instructor.
Secondly, the charter job you seek does not exist. If you want to go down that route (and there is a lot to commend it for a variety of reasons) then go north. Darwin, Kunners, anywhere where there is a heap of GA going on. Give up the comfortable life, cut the apron strings and build up a bank of stories with which you will be able to bore a first officer witless in the years to come.
But, if after a few years of GA charter, airlines don't appeal then consider instructing. You will at least know what works and what doesn't in the real world of flying.
