The idea of Kill America First, in my opinion and experience as a veteran of many games, only works if you surprise America. America generally only sees the danger if you position your forces so that the attack is broadcast before actually launching the attack. This is why I generally have my attack preformed in the Solomon Islands, Manchuria and Japan. These are normal positions to stack anyway. You’ll need the Solomons (realistically) to attack New Zealand, Australia and Hawaii. (you CAN do it from other zones, but you cannot hit America from those other zones!)
With luck, America assumes you have 3 transports to hit Hawaii, New Zealand and Australia, perhaps 4 transports. 5 Transports is really pushing it. With 10 ground units, America’s going to notice you and do the math. Not to mention, really? I mean who puts 5 transports in the Solomons when the “goal” is Moscow by way of India? No, 4 you can explain easily over the table. “Yea, I need 2 to hit Australia, see, because you have 2 guys there so I need at least 3 ground units, New Zealand and Hawaii both need to be attacked, so there ya go, I have 4 transports and personell.”
Anyway, with 3 or 4 transports in Solomons (plus ground units) and 3 or 4 transports off the coast of Japan (with ground units) its a matter of hitting Alaska AND W. USA. Many a KAF has failed with just the assault on W. USA. Hitting BOTH territories gives you the ability to start landing aircraft in one or the other territory if America cannot liberate both zones. (Otherwise, you can always tie up your carriers…I dont like it, but you can.)
Of course, even a failed KAF has its benefits to the axis. For one, America’s pushing out men, tanks and planes left and right (mostly men and tanks) and not warships to protect the British fleet, transports to reclaim Africa and planes to defend Moscow.