Taeguk is no good because SB isn’t a channeling ability.
If you play ranged- use Zeis
if you play melee:
gogok - the cooldown adds damage to your crimson
esoteric alteration or gizzard - these good at low paragon because this build gets one-shotted at low paragon
The combos are:
Voos in hand (rolls with 45-60% SB damage) - Barber in Cube
Aquila in cube (to make up for the damage reduction from extra soul harvest stacks from Sacred Harvester)
If you use Voos, you don’t have to use Rush of Essence as a passive. I run with Confidence Ritual for the extra damage.
If you run Sacred Harvester + Manitou, you need Rush of Essence
If you are under Paragon 1200. I would recommend using the full set without Captain Crimson and use Ring of Emptiness (damage) and Unity (damage reduction). Otherwise you will find yourself dying a lot.