Bad Celica Ivs

This could work.

nope, fodder her for Spur Def 3
Seriously though -Spd isn't the end of the world, either build her so -Spd doesn't matter with things like Quick riposte or give he Speed seal and pair her with a speed boosting hero/allies. It's unfortunate when you get less desirable IVs but the character will still work just fine for the most part.

A set for Celica:

Ragnorak
Drawback
Draconic Aura
LnD
Desperation
Flexible
+3 Spd

Nice Distant Def fodder. Try it with a Guard Bow+ user