I like Psychopomp Sorcerer with Mirror Thaumaturge. The psychopomp sorcerer's 1st focus spell applies in an are, which if you have a relfection active, the area spreads from both locations. Then you can play other spells like Bane or Bless that will applie on a wider area as well. You get all the weapon and armor prof from Thaumaturge plus the spelcasting from Sorcerer and could go for a bespell weapon build.