Neymar is by far the safer choice.
He's got a tendency to score in big games so even if he is off form, I can still see him scoring. I can't say the same for Pedro.
My worry is if we actually start Busi, his recovery is well ahead of schedule, no? Also there is no way he would be fully fit. When Busi plays bad, he plays REALLY BAD and to me it feels like a big risk to start him if he isn't fit yet.