While there is some bimbo if not bimbofication progress running with Alison, I'm not sure if allows herself to fall off that deep to end up like Bad Jess. She isn't hot and young enough, for starters.
My current list would be:
Ian, if he romances her. He may also be available if she babytraps him.
Wade, if Ian isn't available and if Wade takes care of himself.
Jeremy, since he is always available and better than nothing. He may grow out of his phase and if he impregnates her, he may just stick with her out of duty.