Florida Tech and Illinois Tech are science and engineering focused schools, with few other offerings. The other schools have more classes in other majors and are much bigger schools. VT, of those listed, has the big time athletics. The SUNYs and Chicago are in very cold climates, VT more moderate although can get cold.Pack his flip flops for the beach at FL Tech. Chicago is the only big city, with Buffalo coming in second in size but maybe not in diversity. He also should consider what area he’d like to focus on - aerospace, design, etc.
Florida Tech is 30% international students, so has very good support. Many internships and co-ops in the US aren’t open to international students, so you need to make sure the school will have not just internships, but some open to international students.