These are my picks!
Manabi = Head strong leader. (The kind you see in shounen series.)
Mikan = Shy and quite girl who learns to believe in herself.
Mucchi = Over all rough and tumble girl and not afraid to get her hands dirty.
Mei = Both of best worlds resident tsundere and genius of the group.
Momo = Your run of the mill rich girl with a bubbly mindset and cheerful attitude.