Are there wizard spells in particular you had your eye on?
Unless you had something specific in mind, I would personally go as a cleric with the domains of
Charm and
Darkness while backing that ass up with the
Night subdomain. If you can't find a deity with those domains and aren't allowed to be a deity-less cleric, there's the
Separatist archetype. For your other archetype, there's no contest:
Variant Channeling. Yes, I would like to be able to mass-daze all living enemies for one round at the low-low cost of two
turn undead energy channels.
By the way, Pathfinder really helped you out with skill prerequisites for PrCs a lot. Class skills don't determine how many points you can put into a skill, merely whether you get a +3 bonus for having them. I bring this up, because as I've said before
Veiled Illusionist is probably the most boss PrC ever printed for d20 blaster clerics that a table will allow. It's so boss that unless your game is going to end before level 7 or you have a specific reason in mind for being a wizard or summoner (such as being a summon-monkey) that you need to seriously ask yourself why you're not going this route.
And yes, you will know three illusion spells before you take your 1st level of Veiled Illusionist. Vision of Hell, Trail of the Rose, and Silence.
LN Human, Separatist Cleric 5 / Veiled Illusionist 4 of some deity with the darkness or charm domain with the Rulership: Harm Alternate Channel.
Most geegaw that gives stat gains go into wisdom and charisma. You are the party face.
Your feats and spell lists look something like this:
1H: Quick Channel
1: Selective Channel
3: Spell Focus: Enchantment (unless there are no other crafters in the party, then it's Craft Wondrous Item)
5: Spell Focus: Illusion
7: Greater Spell Focus, either Illusion or Enchantment
9: Craft Rod
Spells:
1:
Sleep/Charm Person,
Murderous Command, Silent Image (L6)
2:
Blindness,
Compassionate Ally, Hold Person
3:
Suggestion, Stone Shape, Deeper Darkness,
Vision of Hell, Major Image (L7)
4:
Shadow Conjuration,
Aura of Doom,
Fleshworm Infestation, Improved Invisibility (L8)
5:
Charm Monster,
Greater Forbid Action (!!), Shadow Evocation (L9)
Spells like Magic Circle Against Evil are inserted at your discretion.
Alternatively, you can go with a cleric that has the
Void domain instead of Darkness or Charm. The real money of that domain choice is the Part the Veil ability. Well, aside from the +2 bonus to will saves that matter, overland flight, the entire planar binding line, etc.
The problem with this variant of cleric, however, is that you need eight levels of cleric before you get the ability. This isn't a particularly huge deal because you will want to take levels of cleric in between levels of Veiled Illusionist to better maximize your plundering of wizard illusion spells. However, if you go with the Separatist cleric you'll have to take ten levels of cleric before you get Part the Veil. Unless you find a deity with the Void domain, but since Pathfinder tends to reserve this domain for evil cosmic horror entities, good luck with that.