Gday,
Agree with most of the other reply post. It probably is the best time in a long while to be embarking on a career in aviation. Jobs at all levels appear to be for the taking.
First jobs usually revolve around the GA staple diet of C182/206/210 for first charter jobs. Flying isntructing is obviously starting on the C152/c172/pa28/G115 etc. Typical first multi engine jobs are in C310/Be58/PN68 moving up into the larger twin types of C402 and Pa31. Instructing can provide multi engine time but it's usually in Be76/Pa44 size.
I really don't think charter or instructing is better then the other. It's probably more important to get in and start building the hours.
There are a lot of airlines out there around the world. Don't limit yourself to QF or EK.
Enjoy it.