Do you really need Time Stop?

I've been playing a Solo Sorc on Tactics. To be honest, the only fight which I found impossible was Illych, the rest has been too easy (although I have disabled traps and locks.)

I've found that the spell Wish gives me the option of Time Stop + Double Improved Alacrity the vast majority of the time I cast it. Given that I can obtain Time Stop from Wish, why bother selecting the Lvl 9 spell Time Stop?

[Kyrvias]

When you run out of wishes

[Balintherlas]

You dont always get that wish option too, I like to cast time stop, get rid of all the enemies buffs, then cast wish and hope for the double time stop option.

When you run out of wishes

With project images, and the chance of restoring all my spells? Not a chance!

And using that logic, I should select Spell Trap...

[Kyrvias]

Spell trap... ever so useful. Is wish a ninth level spell? If so, then I think Spell trap wouldn't bring it back. If spell trap *does* bring back 9nth level spells, then skip timestop and use the Projected Image/Wish/Spell Trap combo...