Quote Originally Posted by Hysterior View Post
For my SCH I decided to go the cheap way
Crit till max grade III materia
Det till max grade III materia
rest in piety

Honestly, if you're going to max out rank III's on crit and Det, you may as well also do the rank IV's as long as they're at 100% Infuse chance. Considering the risks you'd just finished taking with blowing up rank III's at 50-60%, 100% rank IV should still be worth it