Moving to Kolkuta (Calcutta)

Hi All,
Protected content family might be relocating to Kolkuta. I would like to ask a few questions regarding prices of housing, schools etc,etc.

1 How much would it cost to rent a nice 4 bedroom house/villa in a gated area?
2 Is there any British schools in Kolkuta? What are the school fees? ( my daughter is 7)
3 If I am offered a position with a company how much salary would I need to live comfortably in Kolkuta. I would be relocating with my wife and daughter.
4 How much tax would I pay ?

Your help would be greatly appreciated.

Darryl