cabbagedad is one of many who have "been there". I think most all who have been through these things would agree with what he posted.
When I was 9 years old there was a big, very big, boy that would hit home runs farther than anyone in our league. At that level he was a legend of sorts. 8 years later he no longer played Baseball. In the meantime a bunch of the little guys that couldn't hit it past the infield, when they were 9, were hitting them out of the minor league stadium in town when they were 17.
At 8 years old you can see some natural talent at times. Hand eye coordination, natural throwing motion, etc. However there is so much more that you can't see until they grow up. One of those things is how far they will be able to hit a baseball. Another is how hard they will be able to throw a baseball.
Also, baseball should never be a job, until at actually becomes one. Fun is the name of the game! Not saying what is taking place isn't a lot of fun. Working on things can be fun, but make sure to go fishing or something, too.