IMO those are above average #s to have at 15 years old, and I am always a little skeptical when someone throws home to first times like that out, that is blistering. Depending on where you live, if this kid has this size, speed and measurables you are likely a know commodity in your area.
We played 14U USA baseball in 2015 with a kid who had about the same build as your son, ran a 6.9 sixty and was the bell of the ball. Two years later he is slower and being passed by many players. Advice: Keep your foot on the gas.