Fuck.Off. Could you actually see him risking his life for her? Where was he when Duck nearly got bit? Where was he when Duck actually did get bit? Neither time was it him that actually saved the kid. He's a failure as a father and a role model, I'd rather train Clem to survive on her own than go with him.
Omid & Christa
They seem like a ready-made family for Clem to slot into. The only issue is how much of a liability Christa is, assuming, as we all do, that she's pregnant. Do they really want another mouth to feed anyway?
He's working with Radioguy so not a chance in hell.
This is an interesting choice. If you wanted a role model for Clem to learn how to survive, you probably couldn't ask for a better choice. Molly is intelligent, innovative, resourceful and independent. Yeah she's a bit cold but that's necessary. It's just a question of whether she'd want Clem around.
I think I'd probably go with Molly.