I think it could be both, but I'm leaning towards a bad choice, because I think Pinky looks good with Ch.7 guys. Although it would give her more diversity with different p'eks in ch.3, I prefer her at ch.7 But whatever she chooses, it's her decision.
I don't get why Pancake would be such an issue, sure she gets a lot of jobs and everything, but would Pinky really want to do those jobs that Pancake has? I'm sure Pinky has a lot of jobs too (but maybe not as much as Pancake). I don't want to start something, I like both actresses, but I think Pinky shouldn't use Pancake as a reason, I mean Pancake's a pretty good actress, good promoter, and also a lot of people love her, I think that the boss is smart for using their resources and knowing how to 'lure' people.
If Pinky does move to ch.3, will she be promoted as much as Chompoo is right now? Will she get more jobs too? In my opinion, I think ch3 is pretty competitive like or more than ch7. But like I said, her decision, no matter what she chooses.