Any 50% starting NP CE is fine. I would also request to use Command Codes like Merlin, heal, and debuff removal. And also charm immune. Let's see if budget Maou Nobbu can beat them.
I had 2 good runs of this CQ. The fun run involved using Van Gogh and Ranmaru to win with Ranmaru's NP to mostly take care of Caren and monstrous crits to take down Angra with Castoria supporting for survivability. Wasn't the best it could've been due to Caren being terror immune but it got it done. The second braindead run was BB/Miyu/Castoria until Angra was done, switch BB for Erice Avenger to deal with Caren. 0 HP lost. Might try a couple Quick or Buster runs too.