Good threat, good post! I'm going to go against the grain here in terms of dieting and in particular, diet before workouts. I prefer to workout on an empty stomach, myself. I'm more of an AM workout guy and I get better lifts in basically lifting on just water after a night of sleep. But then again, I mess around with slow-carb, keto, modified keto too, as well as intermittent fasting and time-restricted feeding. So I'm a little whacko when it comes to diet.
I think it's just important to try different things and see which works best for you!
I personally wouldn't squat three times a week! You need your rest, my friend! The 5x5 for squats is good. But I think squatting more than twice a week is overload for me.