Mmmmm ...
As per "Good Grief" above .... the Instrument Rating is a must for unrestricted operations in India .... particularly if you have any visions of getting into the "twin" or "Offshore" market.
India seems to have a sort of "left over" British system of doing things ... those who have been through the UK training grind will get comfortable very quickly. Lower airspace ie <F100 (depending on where you operating) not much Radar ... lots of gaps ... be very "up to speed" with your radio work! you will
need to have good English language skill.
The biggest advice to getting on in India is to "just accept it" .... the way it is, is the way it is ... YOU will NOT change anything so just smile and stay happy!
There are however some very professional people there (as well as a lot of "oxygen thieves") ... so don't think you will go there and "Know it all".
East Coast of India .... likely to resemble "Gulf of Mexico" in a few short years!!!
You may well grow to Love the place ... if you go there do so with an "Open Mind" .... and ENJOY.