Personal Lesson or Chaldea Lunchtime

Is it worth to MLB Personal Lesson now that the Chaldea Lunchtime is soon? I'm 1K mana prisms away from MLBing Personal Lesson. Personal Lesson has good effects especially for those who want to max all of the Mystic Codes like me but Chaldea Lunchtime is a sure FP magnet.

I'm also planning to consume at least 50 apples each for the upcoming lottery event, namely the Nero Fest and Christmas. That helps for farming mana prisms, right?