The big thing it seems to me with this map, is defending is much easier than attacking. ACs are extremely defensive in nature and power, and airbases are extremely powerful on the defense. Combine that with allies can defend together, but not attack together, and the idea would be to make the enemy come to you. By the end of turn 2, the starting US fleet could be in queensland along with 2 ANZ destroyers and 1 sub. Then on turn 3 the US can take/liberate Java with ANZ helping to defend, along with all the planes in Western Australia the allies can manage. Japan can attack that fleet, and expose themselves to a counter, or leave it be to continue stealing japan’s income. I think that will be the ideal way to go in this game as the US. Also note, Java is 2 turns away from Japan, and granted 3 away from the US but that is the best spot in my eyes as anywhere else is only 1 turn away from Japan.
If Japan does not attack turn 1, with UK I would take Java and Dutch New Guinea with the UK transports and rally all allied boats into SZ 56 to support the US fleet.
The other thing I wonder, is if a sub heavy ANZAC would be able to harrass japan as the US can block and can opener to clear the way. Granted with AN’s low income she may have trouble getting enough to be a threat but still an idea.