Your best bet would be to use one of the OW mileage awards which allows you to use AA + at least 2 other OW carriers.
Some bad news unfortunately: Not really possible to get to Tahiti without paying a lot of miles for backtracking, assuming QF flies there using its own metal. HKT is not served by a OW carrier so you'd have to get to BKK and pick up a flight from there (quite cheap). You can go U.S.-HNL-SYD/BNE-BKK-HKG-U.S. or more. Just depends on how many miles your award permits you to travel.