Post Registration/ Purchase of Agricultural Land (Karnataka)

Hi, I have purchased an agricultural land in Kanakapura district, Karnataka. While that I got the papers partially verified by an advocate, due to lack of time and other urgencies, I went ahead and purchased the land and completed the registration formalities (in my father-in-laws name who is eligible to purchase agri land in K'taka) also. I also have the RTC transferred on to my Father-In-Laws name. My questions are the following: 1) Now that the land has been purchased & registered, what documents (registration deed etc.) I need to keep with me to secure my investment? Please give me a list and from where I can get these? 2) There was a mention that the land was a grant land, but there is also a court order which passes an order otherwise. Should I keep a copy of this order also? From where can i get this? 3) Any other documents I need to keep (sketch??) ? Please give me a list and let me know from where I can get these (assuming I did not get these from the beginning before buying the land)? Thanks a lot for any responses! Regards, Srinivas