I don't care how fast you are or how high you jump... none of that matters if you constantly get injured.
Let's address those small things first. The healthier you are, the better you'll be able to play. Worry about being quicker, stronger, faster later.
The quicker, stronger, faster you make an individual, the more susceptible they are to injuries because they don't know how to handle that extra speed and power...
When you do those things, you need to learn how to stop too. Everyone teaches you to go, go, go; nobody teaches you how to stop.