Spells: a stronger approach?

I’m thinking that your damage is actually too low. Maybe it’s best to start with priests. Basically, the highest priest spell at any given power level should be able to cure one guy up mostly to full.

PRIEST
1: Heal 1d6, Slow Poison, Light, Command
2: Heal 2d6+1, Cure Blindness/Deafness
3: Heal 3d6+2, Cure Paralysis, Hold Person
4: Heal 4d6+4, Neutralize Poison
5: Heal 5d6+7, Cure Disease, Atonement, Lesser Gate
6: Heal 6d6+10, Regeneration
7: Heal 7d6+15, Raise Dead, Commune
8: Full Heal, Resurrection, Gate

HERMETIC
1: Missile 1d4, Blast 1d2
2: Missile 1d6, Blast 1d4
3: Missile 2d4, Blast 1d6
4: Missile 3d6, Blast 2d4, Fly, Polymorph Self
5: Missile 4d8, Blast 3d6, Lesser Gate, Polymorph Other
6: Missile 5d8, Blast 4d8, Teleport
7: Missile 6d10, Blast 5d8, Limited Wish, Death Spell
8: Missile 1d100, Blast 6d10, Wish, Gate