First off, I will say “swings” in IPCs is a very rough, and oftentimes inaccurate metric by which to measure progress in the game. That being said:
The money islands represent a swing of 24 IPCs. +15 for Japan directly, +5 NO, and -4 from UK Pac.
Hawaii represents a 12 IPC swing in of itself. (2+5: Japan, -2-5: US). If you add in the +2/-2 four point swing from Alaska, I’m only seeing 16 of your 19 IPC swing. What am I missing?
An Alaska incursion, at that point, is possibly watering down your efforts, as it only represents a 4 IPC swing, unless your goal is to force the US to spend more money than you do on land units to retake it?
America would try to build off of the west coast, which it can easily do if some of its initial fleet survives (initial meaning what it starts the game with and anything it has bought US 1 and 2). America is not going to let you sink its Hawaiian fleet without odds that are at least 50/50 in its favor. Seeing the IJN in SZ 6 on J2 is 100% telegraphing your intention to hit Alaska/Hawaii J3. There is absolutely no other reason for your fleet to be there. If they are doing a “normal” heavy investment in the Pacific, America is going to make anything you do on J3 bloody as hell, or punish you terribly on A3, or begin the buildup race with Japan on Hawaii and the US on Western U.S. There’s only two ways one of those three things wouldn’t happen: 1- fantastically good diceluck for Japan on a naval fight, 2- America doing heavy Atlantic play.
I don’t think you could swing down and start to behead ANZAC on J4, as you have only four loaded transports. ANZAC has at least 3 art/inf and 3 fighters at this point. Your 6-7 dudes, and if you’re extremely lucky, 8, can’t stand up to their attack to push you back out of Queensland. Am I missing something and do you see this going differently?
Moreover, if you don’t take the money islands, and put a few boats down there to dissuade ANZAC/UK Pac from getting them, you’re going to have more heat coming out of the southern and western pacific than a “normal” play.
I very often went to Hawaii early when I first started playing Japan. I stopped doing that.