Consistent World Generation Shape

[gleaming escarp]

Is it possible to to have world generation that always generates in a given way.
I am trying to make custom worldgeneration for a custom dimension that guarantees an island of roughly a given size generating at 0,0 and islands placed to the north, south, east, and west of it with a custom biome in between.
I have played around with noise and density functions but I haven't figure out how to get consistent shapes and sizes of islands or how to get it to generate at 0, 0

[drifting gale]

probably not because its seed dependant

youll have to make that a structure and spawn that in yourself

[random moss]

It's technically possible but extremely difficult and annoying, and even then you'd need to make some compromises

[gleaming escarp]

:(

[gleaming escarp]

Thanks for the help