Which materia should I imbue my sphere scroll with?

These were what I was thinking:

Parry/Accuracy
Determination/Skill Speed
Determination/Crit
Accuracy/Determination or Crit

I am more of a pvper than a pver. I do not have my Wave axe yet for pvp. But if I do get it I won't need Det/Crit on my Bravura Novus.

I am not in a raiding group and have yet to beat SCoB Turn 6. Any thoughts?