From what Ive seen (and I may be wrong) is that an Aussie licence would probably help you out more. As far as expats to Fiji go alot seem to be Australians.
I think the likes of air Fiji have highish times for an expat approx. 3000tt tho like every where else I imagine it just depends on things at the time.
From what people who have been there/done that have said it is a really nice place to fly, and having been there as a tourist I dont doubt them.