I want to create a medieval tower t...

I want to create a medieval tower that will serve as the keep for a vanilla minecraft taiga village. The tower has a 17 block diameter, but the bottom level can be one more layer around the outer layer. Make it four levels tall. On top, make battlements and a small flag tower. The bottom level is the throne room, the second level is the armory/storage level (displaying armors and weapons, is what I mean by armory), the third level is the library/enchanting area, the fourth level is the living quarters. Make one underground level that serves as the forge/workshop