Couple things I noticed with the set up.
How many empty air strips the US has that are at Japans disposal. You have Guam, Midway, and Wake all start undefended. Also that the Philippines has no AB or NB.
Then Japan basically gets a free port at Kwangtung. Malaya comes with a port, and the UK will most likely be forced to back down if Japan heads that way early.
Ceylon (island off Indian coast) could be a good place for an AB to help protect the UK fleet in sz 39.
I also used all the Japanese tac bmrs that came with it, and some are chipped.