I need to ask a question? What is ri on the division order? What is the difference between ri and royalty payments? What does it take to form a LLC incorporated? Also, Do you need an LLC in order to receive benefits on a 582 acre track?
I would think RI stands for Revenue Interest.......acreage you own in unit/size of unit (X) royalty on lease. (I assume you are a leased mineral owner)
As far as forming an LLC get a good CPA or tax attorney to give you advise on that. I don't understand the 582 acre tract question.