I want you to build me a structure ...

I want you to build me a structure made up of 16 main flying islands (must have) arranged in a circle, each measuring 5000x5000 blocks. These 16 main flying islands have an average size ranging from 100x100 to 120x120. The 16 flying islands will be divided into two halves and arranged in two halves of the circle. 8 flying islands with a paradise theme using white-color block, and grassblock (arranged close together). 8 flying islands with a hell theme, using block from the nether (arranged close together). The paradise flying islands will have trees, small buildings, and beautiful decorations. The hell flying islands will have ruins, lava, hell trees, and skulls. In the center of the circle will be a separate flying island, measuring 500x500 blocks, containing an ancient arena.