Miami Ohio is D1, participating in the MidAmerican Conference for most sports.
Sororities, sports, warm weather, students love their school:
Consider the University of Mississippi Honors College. Smallest school in terms of enrollment in the SEC–just under 17,000 full time undergraduate students.
With a 3.6 GPA & a 1450 plus SAT and a STEM major, your total COA will be close to $12,000 per year or less. This should make any graduate school much more affordable.
Vanderbilt University, University of Virginia & SMU also should be given consideration.
P.S. Any career goals ?
If willing to dip below 4,000 students, then Colgate University might be of interest to you.