Weight-Loss Question about calories

[LeeGiS]

I'm 17, I weight 79kg(dropped 2kgs in a week) and my height is 177cm. I started doing Insanity and I calculated that my body needs about 3300 to 3500 kcal per day. That's pretty high number but I'm a teenager so that's why it's so high.
Now I'm on a strict diet and I eat 1600 to 1800 kcal per day, which is almost double less that my body needs. BeachBody Team recommends that people should have 500 kcal less that they need to lose weight and you should eat no less than 1300 kcal per day.
My question is: is it right for me to eat such low amount of calories? I mean, will it fasten my fat loss or will I damage my health?

 

[Jericho]

At your age and all? I wouldn't cut that low. Remember weight loss is a long journey so don't try to sprint, I mean you are still growing. 2200ish is better I believe.

 

[LeeGiS]

At your age and all? I wouldn't cut that low. Remember weight loss is a long journey so don't try to sprint, I mean you are still growing. 2200ish is better I believe.

Thanks for your advice. It's just I want to have 6-pack by the beginning of the summer. It's not long way to go, just have to lose some fat from my obliques and back.
However, I've posted this message in few forums and I got fairly same responses. I think I'm gonna raise my calorie intake to 2200kcal.
What is more, if I burn 4000kcal per day or even more, are those 2000 calories enough to keep my organism operating normally?