I don’t KAF, in either Pacific or Global. I use the Pacific ALpha setup and Japan attacks around J3 (maybe one later if it seems acievable).
While I don’t try to take Australia early, I do try to destroy any navy that is around. A carrier in the carolines can often send it’s planes, with a sub and maybe another sub or a destroyer, and take out ANZAC Navy and land back on the carrier in relative saftey near the DEI (Java) or occassionally, or you can send the carrier to NSW SZ supported by a couple fo dedstroyers. I think this is very important for Japan if it delays a DOW. Of course, you cannot lose your carrier, or even take a hit on it, so you have to be careful.