I prefer to ensure that UK would have a rough go about investing in an Indian IC. to that end, I like to set-up a Bash India move with Japan J1. I team this with an IC purchase and a 2 transport buy J1.
Place the IC in either East Indies or Borneo, I perfer East Indies myself as it is closer to India. Recall too that you will have the Southern Naval force off India (loaded IC, BB) end of J1, and an IC purchase would enable navel buy if needed if the US moves agressively into the Solomons on USA1.
The J1 India bash doesn’t allow Japan to be too agressive against China or Russia turn 1. That is ok with the 2 transport buy to move 4 units into asia J2. Japan’s lack of initial transports needs to be rectified to increase their income to be able to fight a potential US naval onslaught.
The India bash move would enable Japan to attack India with 5 inf, tank, up to 6 ftrs (depends what survives SZ35 battle), CA and 2 BB offshores if wanted (bomber if it survives SZ53 attack). Strong deterant to any Indian IC. Max UK india units is 4 inf, 2 ftrs, aaa. Russia may set-up to retake, but Japan could also reolad for a J3 attack with the East Indies IC and 2 tpt buy J1.
Needless to say, this move removes any allied thinking of building a strong hold in India. Once that is stretgeic option is removed, the Japanese can move into a more standard game plan of attacking china and opening another front on Russia while keeping vigilant against the US navy. With Japan’s air force, one or two more carriers is usually sufficient early (with a DD and/or sub or two) to hold out.