Don't set a velocity goal you want to reach in four years. Evaluate yourself every year. Push yourself with your goals. your objective should be to be the best you can be. As for selecting a college, don't focus on a certain level. When it's time to start showcasing (after soph or junior year) make a business plan. Think in terms of the best baseball, education and social experience possible.
You will grow and get stronger. You might be a completely different player from one year to the next (in regards to college potential) in high school. Good luck.