Hello Wonkier,
dual wield and bow will get you max dps.
rapid strikes / blood craze / crit surge / bound arm / rearming trap = REND ULTI
poison injection / endless hail / hurricane / bound arm / vigor = BOW ULTI
NMG which will be 2 daggers 3 Armour pieces then probably automation rings/neck and armour pieces found in darkshade cavern dungeon as this boost physical damage.
Your aim would be VO (vicious ophian) found in END game trials.
But the above will 100% get you by for now easily and the gear isn't hard to obtain at all.
Luke