What about the University of Minnesota? It’s a big school in an urban setting. The Greek system is pretty small there. Cost of attendance for an international student is currently about $54K/year. Your numbers are on the low side for the College of Science and Engineering there, but not for the College of Liberal Arts, which offers a BA in CS. The BA would allow you to take more non-science classes than a BS would, so you might even like that more (and if you don’t, you might be able to transfer after your first year, if your grades are good).