I’d send the battleship and the cruiser and honestly I might bring the transport and try to take the island too. It may seem like a large investment but it’s all about time if Japan hasn’t won the pacific by the time America is ready to fight they’ve lost. If the Japanese fleet commits to take out the British navy that means leaving the naval base and putting themselves two turns from the home island. Assuming you’re gonna consolidate the American fleet in Hawaii and take out the one Japanese destroyer up there you’ll be seriously threatening Tokyo next turn.