THE FOLLOWING ASSUMES THAT EVERYTHING ELSE BESIDES BASEBALL CHECKS OUT - You like the school, they have your major, you are comfortable on the campus and all the financials are not any issue. The only questions that remain are about the baseball program.
To me, there (below) are the top 3 things you need to consider. Am I off and missing anything?
1. You only get 4 years of eligibility. Go somewhere that gives you a chance to compete for playing time as soon as possible. Don't go to a school where you might start to get a chance to play in your junior year because then you have wasted 50% of your eligibility.
2. Choose a successful program. Playing for a team who is lucky to win 15 games a year gets old in a hurry. Baseball is more fun when you are winning or at least have a chance to win most of the time.
3. Play for a coach that you respect and admire. Don't go to a school where you are not sure if you will get along with the coach. Worst thing to do is have a job where you don't like your boss.