Talk to some fraternity brothers at your campus and get their opinion. They would be your best source to get advice.

People like to blow sunshine up the butt here on GreekChat. As I say with "non-traditional" (upperclassman, not 18-19 years old)PNMs going through sorority rush, unless you're from that campus (in this case, C of C), then you really don't know how Greek Life is like over there or if upperclassmen successfully join organizations.

What might work on your campus might not necessarily work on his.