[antych]

I've been on a ketogenic diet for about 3 years straight, so I know a thing or two.

First of all, it's not a high protein diet. Excess protein will be used by your body to produce glucose through gluconeogenesis, which is like eating carbs and it will take you out of keto. You should only get about 15-20% of your calories from protein.

Your calorie intake depends on your activity level and whether you're looking to tone up. Most likely it will stabilise by itself. Ketogenic diet suppresses hunger and you usually eat less. Portion sizes should be smaller than regular, because fat packs more calories per gram 9 vs 4 in protein and carbs.

You shouldn't really care about calories. Keep carbs under 50g, protein under ~100g and eat as much fat as you need to not feel hunger.

Stock up on coconut and olive oil. Use coconut oil for cooking and add olive oil to meals, that will easily meet your fat requirements.