As others have said....just too early to tell but with your size, I'd expect you can get that velocity to increase quite a bit over the next couple of years. Keep working on getting stronger. I'd also try to get that change up speed up to 67-68.....it doesn't need to be 13 mph difference to get outs....and it's likely 62 will get hit pretty hard especially if you end up pitching to HS guys that are 2-3 years older than you.