Family or non-family consideration for partition deed

Hello sir my grandfather (X) had a piece of land and he died without a will. My father (A) and his sibling (B) were natural heirs grandfather. I am the only son (C) for my father and my uncle (B) has two sons (D & E). I am not married yet, whereas D & E are married and have a kid each. Since my father had 50% rights to the property, I inherit the same. Remaining 50% should divide among D&E. All X, A, B and their wives are dead without any will. Also one of my cousin (D) is also has died recently. Now, all 4 surviving heirs (C, E, wife and kid of D) would like to do a partition amongst ourselves. Please advise if this partition deed will be considered as Amongst nfamily members or non-family members? What would be registration charges for the state of Tamil Nadu?