Organic and Commercial - Which crops

I am planning to take an agriculture land of 20Acres near Hyderabad (100KMS From Hyd).
I am looking for a mentor.

Its a mixed soil and with water available.

I would like to know from where to start?

Do I need to do soil and water testing? If so how long will this take?

What kind of commercial crops can I consider?

Please provide your advises?

If any one is having good experience in organic or ZBNF farming and looking to join I am okay.