Part Time would make sense.
The majority of 787 flying is flown with 2 crew, Bali/Thai/Sing/Japan, and this is where the bulk of capacity lies. The legs are fairly short, they even add on MEL/SYD tags on some flights and fly right through.
The only long hauler is HNL and MEL-NRT where SO's could be used. But these routes are still all A330 and the last to be transitioned over the 787 later this year, early next year so its a little while off yet.