Here is some info I think is important to review regarding effects of too much protein in daily food intake. Please recognize that I don't mean to stir up any controversy or alarm, or even discourage participation in this test. In fact, I have signed up for it, too.
My main objective here is to point out the difference between "lean steak" versus "fatty steak" eating. Surely, not everyone in this testing group can afford ribeye and waygu steak each meal. And my concern rises from the potential that someone will consume cheaper/leaner cuts, like cube steak, eye of round, minute steak, etc (which contains approx 5% fat). Furthermore, this test has an additional criteria of cooking without oil (grilling, dry pan fry, boil, sous vide, poach, steam, etc) which limits any addition of fat to lean steaks.
There is a condition called "rabbit starvation", or protein poisoning, which is described as eating too high amounts of lean protein. I'm not a fan of wiki, but will post the rabbit starvation link below, in case you want to read further. I would advise all participating in this test to perhaps consider the fat content of the steaks you will consume during this test trial.
Here is a quote from the wiki site, describing rabbit starvation:
"Symptoms include diarrhea, headache, fatigue, low blood pressure, slow heart rate, and a vague discomfort and hunger (very similar to a food craving) that can be satisfied only by the consumption of fat."