Marine work outs for teens?

Hey, I'm planning on joining the military when I'm older. I'm 13. I have been working out for a year now and my workouts have consisted of running (most I've done is 3 miles without stopping) and going to the gym 2 times a week at my local military base. I work every part on my body (chest, shoulders, back, tries, bies, abs, legs) and I do Ruck runs with 2 8 pound weights in the pack. I'm getting bored with what I'm doing and I'm looking to get into shape faster. I'm very big for my age 6"1" 204 pounds and in decent shape. I want to start doing marine work outs though. But I go on the sights and they are all for mostly adults. It would be awesome if you could put an answer with some good workouts for a 13 year old. Consider my size and weight. Please no criticizing about me wanting to be in the military at such a young age. That's all i get anywhere as it would be nice to get some support. Please leave you suggestions. I do push ups and sit ups but have trouble with pull ups. So please leave a good answer.

Thanks.