I bake at least one of these loaves each week and have been doing it for a few years now. I have achieved very consistent results and you should as well if you follow these simple instructions.
I will be using a Nutimill Artiste mixer for my main bread kneading. Other similar mixers like the Bosch Universal will work as well.
I have a a full write-up on my bread and ammo website at:
https://www.breadandammo.com/making-sourdough-sandwich-bread