Perhaps it’d be more helpful if you gave us a link with devotions + items?
In the mean time, components should be generally used to satisfy the following in descending order of importance:
i. Resists (stun resist included)
ii. Armor absorption, OA, DA, flat hp
iii. Cast speed in your case (restless remains for the glove slot is probably BiS)
iv. Energy management (e.g. seal of annihilation, arcane spark)