Opting in for Bel and physical healing, since he'll probably need it for the upcoming event. Bel is very much the type of person who will consent to things, then think about the consequences later.

(Of my others, Simon might consider the psychological work if his issues ever get harder to manage, but he'd probably want to talk through them first to warn Viktor what he might see. Granted, Simon is not a reliable narrator: not only does he have PTSD surrounding things, but he was under a geas that affected his emotions (he wanted to make his patron happy, and she was a Very Bad Lady). So potential there.)