Well, I started a game using the set up changes (-fighter, Tac, Bomb Japan, -Bomb Manch, total 5 inf added to China, UK transports moved to India, NSW naval base) and I have to say the game looks very very good for the allies.
Japan did not attack J1, DEI got snapped up by UK + ANZAC and Japan was forced to attack J2.
Japan decided to move fleet down to DEI territory. Even managed to take Queensland with India very tenuously held.
UK made its stand in Sumatra with fighters/AB so no NO for Japan. USA built up invasion fleet and by turn 3 had them stationed in Midway (with NB, my personal favorite allied build).
Japan forced to retreat fighters to Japan but could not stop US Korea landing.
Stopped the game at that point: Overall the change that had the most effect was moving the transports to India.
The China reinforcement seemed a bit of an overkill.
Having DEI in allied hands by the end of turn 1 was a huge boost for the allies.
Japan rapidly falls behind in income. Very, very tough to make it back.