hey guys i just finished the plyo workouts today and my leg aren't that sore as after the strength workouts, and i really feel fresh. Looking forward to improving my jump from 24" to 28" by december. and to 32" by January. then to 36" in march and 42 (same as kelly) by june. is it when your vert get higher, the harder it is to increase it?

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age: 13
height: 5"2 / 157cm (dream height 175cm)
weight: 80 pounds/ 35kg
standing vert: 24 inches (never trained before)
running vert: 25 inches (same thing above)

aim:
1.standing and running vert 30+ inches
2.get the vjb
3.become a centre in my school team cos the tallest centre we have is only 170cm ... dots