REGISTRY OF PROPERTY-purchased a plot along with my friend

2 years ago

I purchased a plot along with my friend and got the same registered by paying fees and stamp duty. Since I wished to purchase a single floor out of the four planned to be built on the plot, the plot registry mentioned my share in plot as 25% and that of my friend as 75%. Now, we have constructed 4 floors + stilt parking on the plot and now i wish to get one of the floors registered in my/my spouse name. We have also obtained Occupation Certificate from the authority. Now, i wish to know how i should go ahead about registry in order to make the title of my floor clear with respect to other three floors. Also please tell whether i can register the floor in my name considering that i myself am an owner of the plot in 25% capacity. If not, Is it possible to transfer the floor registry in my spouse name via a gift deed ?? Does paying stamp duty during the plot registry have any consequence on floor registry if done in my/spouse name ???
My primary concern is that i should not face any difficulty in selling off my floor at a later date if need be.
Awaiting for your response at the earliest.