Agains a KGF the key to win is to be aggressive with Japan. UK should not have more then 25 IPC in round 3.
For Japan to go via China is not a good idea. A threat against Caucasus is the counterattack.
Factory in French Indochina, Burma, India. Take Australia with a small fleet and deny US NO in Pacific. Factory on East Indies or Borneo is to far away. With 60 ICP+ Japan should have 5 factories on main land. Ftr to Europe and SBR Russia.
KGF is normally not a good move for allied. Axis has ha 60-65% chance to win. Japan can easily get 80 IPC and quickly take Russia. Logistics with inf from Japan is a bad strategy in almost any situation. You need factories on main land.
French Indochina is the best one to build turn 1. Burma and Manchuria turn 2 and India turn 3 if Japan doesn’t have any resistance from US.
What do do with G and I. Mix of troops (more then 8 ftr/brb is not good. Inf-tanks is important and always produce maximum HP in G) is important with G. Fleet (will normally not be possible) and HP is important with I. If UK is poor due to Japan SBR UK is good. If possible both with G and J ( yes you read right, J and not I).