I think I enjoy the research and editing aspects as much as the initial write
Absolutely. For me, the first write is a draft. The rest of it, the editing, is when the story is carved into shape. It is the editing where the subtlety of expression, my voice, resides. This is my argument against AI. I don't want it deciding the very best way to say what I want to say.
So, I agree with your process, it's just that I don't have the patience to work on a long piece anymore. I envy you that. Also, I have become so fond of economy that I cut, cut, cut until my stories are down to bare nubs :)))