What universities do you think are safeties for both admissions and affordability?
I think that U.Mass Amherst might be a low reach with a 3.5 unweighted GPA. At least it is not a safety. U.Mass Lowell would be more likely for admissions. I am pretty sure that the U.Mass campuses do consider your major for admissions, which makes it a bit tougher for me to guess your chances (I am more familiar with computer science, which is generally a tougher admit for those schools that consider your major for admissions).
South Carolina or Southern California? South Carolina might be more likely for admissions.
I agree with taking a look at UNH.