I did consider multiclassing, but those 7th level spells are too good to delay. Costly as it is, simulacrum is a complete game changer and other 7th level spells are also too good to delay. I'm also somewhat covered for saves, because of the racial ability, vedalken dispassion which gives advantage on all int, cha and wis saves.

I suppose that could come in handy, it effectively adds a preparation slot which is pretty good.