1. Firstly this is not ancestral property.
Secondly, since there were five legal heirs succeeding to your deceased grandfather's estates, their respective share in the properties shall devolve equally among their own respective legal heirs by dividing the property into five equal shares or by dividing the sale consideration into five equal shares.
Now since all the parties disputing this property have compromised among themselves, a memo can be filed before the trial court mentioning the compromise settlement among the parties and to draw a compromise decree accordingly.
Subsequently all the parties who are entitled to a legitimate share in the property should execute a registered sale deed jointly in favor of the prospective buyer/s.
2. Any other documents that are reliable to this property may also be attached to the sale deed that you all shall be executing now.