Overweight in fat but I wanna wrestle?

Question
Well school finishes soon and I really want to wrestle in 8th Grade, just now
I'm in 7th grade and I'm 13. I really want to wrestle but I don't actually know
the weight ranges and I don't think they'll allow me, I'm 5' 7" pretty tall I'm a
heavy build and like bulky shoulders but I have a fat belly and fat thighs, I
weigh around 204/5 and I'm trying to loose weight and build muscle for 8th
grade so I can join the wrestling team but like I said I'm scared incase I don't
get accepted, do you have any tips on how to loose fat and gain weight? And  
I think I'm gonna loose fat this summer but I'm also wondering if they're are
8th graders about the same weight as I currently am in proper wrestling?
Anyway thanks in advance!

Answer
I'm not sure about the weight classes in middle school but in high school there is 189, 215 and 285.
 
Your weight has almost 90% to do with your diet and physique. If you literally stay away from anything fried, or icecream (cake, brownies, sweets etc...) you will be in great shape. Always eat organic / boiled things.

I'm pretty sure there are people in the 205 lb ranges at your age. You shouldn't worry about your weight, just work as best as you can.