IF will probably be enough for you to be in a calorie deficit by it self, because it’s really hard to eat a lot in a small window!! But you can try to calorie count for a month or so to understand how much you eat. Just remember that if it’s gonna be long term, you will probably not count calories! And one more thing, the amount of calories you eat will depend on your energy output, if you don’t workout one day you will prob not be that hungry compared to workout days!!