First love would be Hara, adored from afar, wishing simply to see her in person and touch her hand, to know she is real, although I would probably be waiting in a long line...
Gyuri, being "mother figure" of the group, and having a virtuous character, would make a good wife or mother.
A good daughter would be Ji Young, who would be adored by her father, because she is doing so much with her life.
Seung Yeon would be a good friend, since she seems strong, well adjusted, and able to offer good advice.