Playing through the new intervallo in limbus has me thinking two things...
1. Kim has 14.13x more health and 8.9x higher stagger threshold
2. They changed his resistances to be weak to blunt and resist slash instead of just resisting pierce like before.
This means that it's SUPER likely that the library (as of current sinner scaling) is only 15x stronger than the sinners. This is just a guestimate though because the average librarian has around 100 to 120 hp, and 50 to 60 stagger threshold.
BUT it does mean we're getting up to strong enough to handle the library, and if we're strong enough.... we may get a redmist reception while having a binah assist us.