If you'd prefer. I just thought you wanted to play a wizard first. My only concern was when nobody was taking a fighter or a rogue.
If you are concerned about being fighter light but still want to be an arcane caster, you could go for a fighter/mage build. You only lose one spell level if you pick up eldritch knight, and can dip into spellsword if you want to make an armored build or run for abjurant champion for armorless build. A good fighter/mage build is a fighter 1 / wizard 6 / eldritch knight 2 / Abjurant champion 5 and continuing into EK.
For a straight mage, I would avoid any PrCs that lose any caster levels for you. Some 8th level spells will prove very helpful to your survival. This suggests a no caster level loss build, frex:
-straight wizard
-wizard/archmage
-wizard/mage of the arcane order
-specialist/master specialist (a real nice one here is abjurer/master specialist/initiate of the sevenfold veil. Master specialist takes the sting out of the initiate prereqs, and warning and defense spells are not out of place in this adventure).
Spells... what can I say without tipping my hand too much? The module's reputation is well earned. Consider spells that protect you or make you immune to things, even some that do so a bit unconventionally...