Looks good. 

At first I was a little hesitant to allow characters under the age of 18 but a case can be made for still being a kid. A top graduate of an academy and then going on to be stationed in Kanto for two years would work. BUT I have no idea how long someone would be in a Ranger Academy for so let's say it took 4 to 5 years? This makes you 16 or 17. Just an idea. 

And yes, the reason I asked that is because I want the Pokemon to grow and develop with the character. Evolution is just one way of doing that. After you make your changes, post in the IC so you can join in.