Minimum land holding is unsettle but person engaged in agriculture activity and holding agriculture land considers as farmer. Due to bar on fragmentation of agriculture land, so holding assume to complete agriculture land recorded in revenue record except joint ownership, family property/partition etc where holding can be distributive in single piece of land.
95% through sale deed and rest 5 % through relinquishment deed is fine procedure, less stamp duty on rest 5%.
But Release deed too require compulsory registration, otherwise not effective.
If you will go through above procedure,than u r saying, u will get the mutation up to 95% and rest will in the name of previous owner ???
And on this equation, anytime he claim status of farmer, amounts to criminal act and so your criminal liability u/s 120B of IPC.