Isaac - good-natured but financially irresponsible. Also, an idiot.
Firo - A made man who only has eyes for made women (OHHHHHHHHHHHHH SNAP NO I DIDN'T)
Szilard - Old and pretty damn evil. Also, if his scene with Sylvie was any indication, he wishes to be the little girl.
Jacuzzi - I guess if you like your men trembling and weak-kneed? He seems like a nice enough chap, though.
Luck - Probably your best bet for husbando IMO. Financial security, stable personality, and his friends probably wouldn't scare the shit out of your bridge club.
Dallas - Fish him out of the harbor and maybe you can do something with him. I'd keep a tight fist on his pursestrings, though.
Maiza - look, I know he certainly wasn't the shiftiest person on that ship, but there's still kind of an air about him that says he's buried a hooker or two in his time. Squinty eyes and glasses are ALWAYS bad news in anime.
Huey - he's a fucking bum, his friends are no good, and he's in jail. You can do better, girlfriend.