A) Target Enemy Industrial Complexes has hard and as fast as you can. If England builds an IC in India, seriously consider hitting it with everything you can, even if you cannot take China or Buryatia and even if you have to sacrifice a fighter to get an infantry unit to remain after the battle in India. Same for Industrial Complexes in Sinkiang. (Target India, then go for Sinkiang., India can produce faster and has an AA Gun.)
B) Slow down. There is no rule in the game that says you HAVE to target everything possible. Remember, you arn’t earning a lot of money for a long time as Japan. Focus on getting stacks into Sinkiang, Persia, and if feasible, Novosibirsk, but make sure they are stacks!
C) There’s some argument on placement, but 3 Industrial Complexes for Japan is good. I like India, FIC and Manchuria. Some like India, FIC and E. Indies. (I just think the island, while better located, ties up your transports.)
D) Ignore America for the most part. After you sink the SZ 52 fleet, most Americans are going to attack Germany.
E) Grab Hawaii, New Zealand, Australia and Madagascar. Maybe position a transport in S. Africa to hit Brazil, if you think you can get away with it. (ie, America is at least 2 turns away from hitting Brazil and getting it back.)
F) 7 Transports by turn 4 minimum. 8 is better and I’d even argue 9. Reason being is you want transports to clear your islands while landing 8 land units a round off the Japan mainland until you get ICs up. After that, you want transports to hit Africa if the Allies go there.
That’s very rough, but I hope you got the idea.