If you’re going to attack Sweden/Spain/Turkey with Germany, why don’t you send Japanese transports to South America?

You’re going to want to leave the US out of the war as long as possible, so Japan taking Chile or Argentina on J2 should be possible. Move the Carolines fleet eastwards and they’re in range.

If you send all your initial transports eastwards, you’ll have Chile, Argentine on J3, maybe Brazil if you didn’t lose ground troops. Otherwise it’s J4. Get an Industrial Complex down there and you can send tanks into Mexico!