Viability of Hydroponics for dairy farm green foddrr

I have 3 kanals of land . I want to setup a dairy farm for milk production which is in high demand . I live in kashmir and we have very cold weather from november to february. from march to october it is plesaent to modrate hot,
I have some queiries :

  1. Which breed of cow should i purchase ?
  2. How many animals at the beginning ?
  3. What age should be the cow of ?
    4.Which lactation period should be it in ?
    5,What is the average daily cost for feeding a cow ?
  4. For green fodder will hydroponic be fruitful ? we have dearth of green fodder.
    any other relevant information will be highly appreciated