What Type of Kernel am I Coding? [closed]

So I am coding this kernel for my new operating system and I want to code a microkernel but I'm afraid that if I code a monolithic kernel, I might just well be the new Linus Torvalds being unable to switch to a microkernel without a lot of stress and time when I can just code it now to be a microkernel without having to go through all that drama.

The point is, how do I determine which kernel am I coding? Is there a specific file structure or referencing in the compiler I'm supposed to do? Are you supposed to create different files for the different modules I'm supposed to do? Or is the main kernel file supposed to be just filled with calls to different functions in different files in one main giant loop-like function?

Any help?
Thanks,
Joe