Well...
Since I spent 4 wishes improving my psionics, my GM is just going to let me convert those directly into a +4 inherent bonus to Wisdom.
As for a class, we worked out a compromise on the Mystic Theurge that we are tentatively calling the Arcane Thaumaturge.
Arcane Thaumaturge
Requirements:
Knowledge (Arcana) 8 Ranks; Knowledge (Religion) 8 Ranks
Ability to cast 3rd level Arcane and Divine spells.
Access to either the Magic, Spell or Knowledge Domains
Skills:
Alchemy (Int), Concentration (Con), Craft (Int), Decipher Script (Int), Knowledge (arcana) (Int), Knowledge (religion) (Int), Profession (Wis), Scry (Int, exclusive skill), Sense Motive (Wis), and Spellcraft (Int).
Skill Points 2+Int modifier
Weapon and Armor Proficiencies: None
Spells per Day:
The Arcane Thaumaturge will continue to gain levels as an Arcane or Divine caster, as detailed in the chart below. Furthermore, either Arcane or Divine must be designated as primary and the other secondary. The propagation of abilities depends on which is specified as primary.
Level BAB Fort Ref Will Spells per Day
1st +0 +0 +0 +2 +1 level of existing arcane spellcasting class/+1 level of existing divine spellcasting class
2nd +1 +0 +0 +3 +1 level of existing primary spellcasting class
3rd +1 +1 +1 +3 +1 level of existing arcane spellcasting class/+1 level of existing divine spellcasting class
4th +2 +1 +1 +4 +1 level of existing secondary spellcasting class
5th +2 +1 +1 +4 +1 level of existing arcane spellcasting class/+1 level of existing divine spellcasting class
6th +3 +2 +2 +5 +1 level of existing arcane spellcasting class/+1 level of existing divine spellcasting class
7th +3 +2 +2 +5 +1 level of existing primary spellcasting class
8th +4 +2 +2 +6 +1 level of existing arcane spellcasting class/+1 level of existing divine spellcasting class
9th +4 +3 +3 +6 +1 level of existing secondary spellcasting class
10th +5 +3 +3 +7 +1 level of existing arcane spellcasting class/+1 level of existing divine spellcasting class
At Second Level, the Arcane Thaumaturge adds ½ of his Cleric or Wizard/Sorcerer level (whichever is secondary) to the Effective Caster Level of his primary casting class. Example: When a 6th level cleric/5th level Wizard who designates Divine spells as primary makes 2nd level as an Arcane Thaumaturge, he will add +3 (5/2 rounded up) to his Effective Casting Level of Divine Spells.
At 4th level, the Arcane Thaumaturge adds one Domain, from the list, Magic, Knowledge and Spell.
At 7th level, the Arcane Thaumaturge adds ½ of his Cleric of Wizard/Sorcerer level (whichever is primary) to the Effective Caster Level of his secondary casting class.
At 9th level, the Arcane Thaumaturge gains a bonus feat, as chosen from the list of available bonus Wizard Feats.