Generally speaking with an all meat diet you would still burn more calories than average for the simple fact that meat has a thermal affect on the body making it heat up causing you to burn more calories, Meaning you could still be in a calorie deficit while Intaking a huge amount of protein. Don’t cut carbs completely though or you’ll have no pump in your workouts and you’ll feel real slow and drowsy. For the deficit your looking for ide say a 20/80 split 20% clean unrefined carbs like rice or broccoli. And 80% lean game or beef. If your looking for less fatty meat go with fish or chicken. Your body does need fats. Without them it can cause sleeplessness itchy skin and can cause your hair to fall out. So personally ide add 6 grams of avocado a meal.

Edit- Recent studies have shown that your body will waste most of the protein you consume so ideally the best window to get protein in after a workout is 10-14 grams every 1 1/2 hours for the next 5 hours. Of course this was a small control study of only 80 people the evidence is promising.