Need Ideas on Farming

I would like to plant fruit trees in my 3 acres of land.

1 acre lemon trees
1 acre mango trees
1 acre Mosambi trees

Can you please help me with below details?

  • Any latest seeds/plants variety came into market in above?
  • Any advice on how to choose good plants?
  • Any subsidy info(for andhra)?
  • Any economic disadvantage with above crops?