1: Middos
2: (related) Someone who knows how to treat a Lady (I know, I’m old-fashioned)
3: Someone who looks like he can be an active parent, and wants to be an active parent.
4: Someone who is committed to being a Yarei Hashem.
5: Someone whos plan is not “take Tzedaka/government funds/ Shver” for the reat of his life.
6: Someone who has a plan on how to pay full tuition. Ezehu Chacham HaRoeah Es HaNolad.
I like MiddlePath’s response; I am not as eloquent.