depends on how much you use.
It's hard to know how big of a deficit you need to be in to lose x amount of pounds, since it depends on the composition of the pound you lose (how much is muscle and how much is fat, etc). 1kg a week of weight loss should be possible. If I were you, I'd just start weighting myself every week, then see what happens. If you don't go down enough, then either exercise more without increasing food intake or decrease your food intake.