Lad, I am a coach, I've been a coach a long time, and I still play a reasonable 5.0+ game. I say this not to brag, but so you might listen to me when I tell you this.
Finish school, get a job and enjoy tennis as a hobby.
There is NO CHANCE of you playing on the pro tour starting this late. Your whole game needs to be rebuilt from the ground up to have any chance of reaching even 5.0 which is a long way from the pros.
Forget it, ok?
5.0 all courter. Dunlop Bio 400T with cyclone @ 50, Prince CTS Precision 90
"Tennis isn't easy" - Corners