What colleges would be realistic for me? 3.8 GPA, 4.0 UC GPA, and 32 ACT

Only in some situations, based on major (doesn’t look like economics or business majors are included):
http://admission.universityofcalifornia.edu/freshman/requirements/examination-requirement/SAT-subject-tests/

smu, tulane, and even vanderbilt with your leadership. If you apply to smu the hunt scholars program would fit a leader such as yourself with your baseball program.