P.S. Peele also said on that podcast that while he wrote the first draft of Get Out in 2 1/2—3 months, the idea had been kicking around in his head for five years. “Follow the fun,” is his bonus writing advice.
P.P.S. Just to point out how different writers are, Stephen King says that the story comes to him as he writes his novels. He’s the first reader as well as the writer. That’s the exact opposite method that Jordan Peele used. “Different strokes for different folks.”