Honestly, it would have to depend on what England did. If they took Borneo and New Guinea, sunk the Submarine in SZ 45 and sunk the Transport in SZ 59 then Japan would be in a REALLY bad place on Japan 1.
If all they did was move into position, then I would eliminate China (to get the fighter) and then plan to make a massive dump in FIC on Japan 2 (with a complex on Japan 2) to try and get India. It’s the most secure victory you’d have probably. Either way, if you force the allies to dedicate their firepower there, you MIGHT be able to get Russia weak enough that Germany can tank dash (as in 8-12 tanks a round) into Russia