Will intaking 1000 calories and 60 minuets of vigerous exercise work?

I am 152 pounds and 14 years old and like probably every teen out there i wanna lose weight.The thing that sucks for me is that i have a fraternal twin and i am constantly compared to her.i know you guys are going say stuff that i don't all ready know.At least i know that i need to get to a healthier weight like 120.Soooo i know that you suppose to have at least 2000 calories a day but i like 1000 better.I do marine exercises (i'm in ROTC)everyday.If you guys can give me an awsome plan that WORKED for you that would be awsome!!!!!!!!!!!!!!!!!