Agreement of Sale

Dear Sir, I along with some friends ( total 4)planning to purchase 20 Acrs of land. For that we have paid the token advance also. Now we need to get into sale of agreement. For that i have below options. 1. Two of us reside in Hyderabad, so we can complete the agreement of sale and also list two other friends names/ details in the agreement ( as they said they will come for the registration) and register the agreement in Sub registrar office. 2. Two of us reside in Hyderabad, so we can complete the agreement of sale and during the registration time we will add other friends also into the registration so that the land will be registered on all four of us in Sub registrar office. now my question is can we go with option 1, and list my friends names in the sale of agreement( even they are not present physically) and complete the registration of the agreement fo sale in Sub registrar office? if option 1 is not allowed can we go with option 2? Will there be any issues in future? please let me know.