In society play during your down time can you find a caster with a given spell and, pay him the going rate to add spells to your spell book . Is there an additional cost or can you take 10 or 20 behind the scenes for any rolls needed?
i feel at the very least improved familiar should be legal since its only useful for the wizard for most metamagic feats your better of with a lesser metamagic rod the only metamagic feat i like is extend spell since the others aren't worth the spellslot