1. 144.9 is the max protein value and 35.2 is the minimum fat value. I probably consume around 120 g of protein and 40-60 g of fat.2. The 770 is low carb calories, which would apply to the first question you asked. It has nothing to do with the backload. You'll probably want to consume around 300-400 g of carbs in your backload. Maybe more maybe less. Start out high (like 600 g) and taper it off from there. The fat really doesn't matter in the backload, just don't do anything ridiculous.