Divine Might and Know the Angles do NOT cancel each other out as they are described to, and both of them benefit from Power surg
Power surg is +4 DC and DMG or +6 if you THF or SWF
Divine Might from around 38 charis is +7 DC and DMG or +10 if THF or SWF
Know the Angels from 38 int is +7 DC and damage 38 is an easy number to get to, these can be much higher
But then power surge makes both of those 8 higher which results in 2 more DC and DMG from each.
+4 +7 +7 +2 +2
+22 damage and tactical DC's for 11ap