Question about SCH and stats

[lulunami]

Avoid Det, but maximize crit. Aim for 13k MP [650-700 piety.] Stack Accuracy up to 594 if you have relic [120 acc, 120 crit] If not meld all slots with Accuracy and consider overmelding an accessory.

My personal preference is Crit>>>SS>> Piety after 680>> Det.

If you just heal, it doesn't matter really, but crit would be better for Adlo alone.

This is the BiS I'm shooting for. If I can stomach dropping down to 550ish piety again, Ill go for the Alex Top instead.

http://ffxiv.ariyala.com/WNQQ

My previous i250 piece had like 115 crit, 121 pie and 24 acc with melds. The difference with Alex top is +14 crit, +86 det, and -121 pie. I am back down to 563 piety, so I wonder if I will face problems. Is there something special about having a certain amount of Piety? SCH feels really hard to play well.