Just don't starve yourself and hamper your ability to buid some muslce. That is why it is off-season. You can always make some adjustments to your diet as you go along and if 1600 calories is really too much, adjust. Even if you just tweak the ratios of p, c, f , that alone will have a profound affect on your physique.
Dont get caught up in what the other girls look like, you have to just worry about you and where you want to be. Enjoy the journey, you are young and have time!