Camp Chef 14" Deluxe for 2 kg Miche, and Red Hen comparison

In my quest to make a perfect, consistent, large miche (~2kg), I have made a slow transition from partially yeasted to my current formula, which is sourdough only, 80% hydration. I'm learning that different flours behave very differently, and many of my experiments have resulted in mud, pancake-flat loaves, giant air chambers, flying saucers etc.