I'm trying to work out which South Pacific destinations I can get to on on a Oneworld Explorer and how. Ideally from Australia (SYD or BNE) to one or more dstinations and then on to LAX or DFW. Does anyone have recent experience with this?

I've looked at SYD/NAN/LAX, SYD/NAN/DFW and also BNE/HIR/NAN/LAX (or DFW) - QF and Fiji Airlines flights - but couldn't get the online tool to price any of those. Fiji Airlines recently joined Oneworld, so I think this should work.

Ideally I'd like to get in and out of PPT if possible, but I think that will require Air Tahiti Nui flights and therefore not viable. Any thoughts or comments would be appreciated.