FFI Magic Help Needed

[pikmar]

I need help deciding on which magic I should put on my team. I got the PSP one recently. I have a knight, ninja, white wizard, and black wizard.
I was thinking of having this:
White wizard
lvl 1-cure, dia, blink
lvl 2-silence, nulshock, invis
lvl 3-cura, diara, heal
lvl 4-poisona, nulfrost, vox
lvl 5-curaga, diaga, healara
lvl 6-stona, protera, invisra
lvl 7-curaja, nuldeath, healaga
lvl 8-full life, holy, nulall

knight
lvl 1-cure, protect, blink
lvl 2-blindna, invis, nulshock
lvl 3-cura, nulblaze

black wizard
lvl 1-fire,thunder,sleep
lvl 2-blizzard,slow,temper
lvl 3-fira,thundara,focara
lvl 4-haste,sleepra,blizzara
lvl 5-firaga,scourge,slowra
lvl 6-thundaga,death,quake
lvl 7-blizzaga,break,saber
lvl 8-flare,kill,warp

ninja
lvl 1-fire,thunder,focus
lvl 2-temper,dark,blizzard
lvl 3-fira,thundara,hold
lvl 4-haste,blizzara,confuse

I'll consider any suggestions or comments. Also, are stun and stop good spells? I've read faqs and they prefer the instant death spells.

[Shiro]

Swap out Heal for Nulblaze on your white wizard. Heal's not that spectacular compared to Nulblaze which is essential in certain big fights (the fire fiend and flame dragons for example).

[pikmar]

Do you think I should replace healara with life also? (I changed heal to nulblaze on my white wizard)

[Shiro]

Yes, as you can revive characters with phoenix downs, but there are no items that can duplicate the essential benefits of healara.