J1 IC is too early, unless you got a 1dollar bid and bought two trannies as well.
If you are building a destroyer each round, I am going to freaking rejoice as the allies. WHat a collosal waste. I will maybe build a sub each round as well as USA, just to unnerve you enough to hopefully spur your dubious purchases onwards. Like you said, if Japan should ignore USAs fleet, why wont it work both ways? Its not like you are going to capture any territory, EVER, with a fleet of destroyers.
As well, only 1 inf per turn is far, far too little for Japan. You need to be able to hold that land. An IC in India and Singhai can chug out more tanks than you can, and they can afford them. Plus they can hold them no problem if you are building destroyers instead of infantry. But thats not even necessary if you are going to ignore India.
Why? Cuz your attacking force is weaker than the force I am dumping into Russia. Caucuses alone can be fortified with 2 tanks and a man, plus allied fighters, each and every turn. And Russia WILL have the money to spare if you arent even going to make a bid for those measly eastern territories, which DO add up. And thats just Russian ground troops. USA and England will definitely be shucking loads of troops into Norway and down the same route you are trying to take, only, they are doing it with more men. Plus, when the shuck really gets going, Germany is forced to fall back somewhat from the eastern front, as those supply lines can just as easily (and usually do) invade France at a point.
In the mean time, Russia can easily hold out against the Germans and even turn their eyes Eastwards.
Not to mention, my typical E1 moves involve harrassing and sinking as much Japanese navy as possible. Are you really going to ignore all those boats? Hope so.
Sorry man, but thats gotta be one of the more subprime strategies Ive heard for Japan in a while. Drop the destroyer purchases, and youve got a much stronger shot at making a good punch, but still theres no reason to take every single IPC from the allies as Japan while you can. Which you MUST do because yeah, you are being outspent bigtime from the getgo, and thats without worthless builds.