One thing that plays to your advantage is that you start out with a ton of planes. USA will have to start buying planes to go with its carriers once they get above 3, you just need to buy the carrier itself and fill it out with your planes.
You also have the ability to scramble in SZ 6, as well as using Kamikazes. The possibility that the USA player can be forced to take hits on his carriers, meaning planes will crash if there is not enough space freed up, can mean that you have more defending Japan than it actually looks.
Don’t forget to block with a Destroyer in SZ 25. That way the USA player can’t get to Japan from Hawaii unless he kills it.
These are all really basic of course, but they are important to keep in mind.
The main piece of advice I would give is to keep a carrier, a few transports, dd’s and subs in the South if USA is at hawaii, and try to keep the rest up by SZ 6. You need a little bit of a navy there to keep ANZAC off the DEI.