Arcane [Rage] is replaceable for any weapon damage buffing arcane.

It is better to use Conculysts to tank enemy fire for you, as they are much more effective at holding enemy attention. Their attacks also do pretty decent damage.
Ortholysts are not as useful because of their turret mode setup animation. This animation is interrupted by you moving another location, as well as just general enemy spawns and locations messing with their targeting. Their immediacy in applying max stacks of Tau status can be mostly supplemented with a combination of Caliban's 1st and 2nd abilities.
Do not use the Summulyst w/ its Choralysts because they barely apply any Tau status on enemies and most of them will just stand there not attacking anything.

Archon Shards
2 max corrosive stacks (emerald) (use tauforged if you want to full strip acolytes)
the rest are personal preference, but I usually use at least 1 tauforged casting speed (amber)