Easy suggestion: Trinity University in San Antonio just won the D3 World Series, and had a couple players taken in the MLB draft in the later rounds. They have a great baseball program.
In addition, they are Tier I in Computer Science, have a brand new $231M Integrated Science Building which houses the CS Department, and they have the 25th highest per capita endowment of any school in the country. That means very generous merit and financial aid.
My S is starting his sophomore year at TU and loves the CS Department, spending the summer doing paid cancer research utilizing his CS.
Good luck!