ELEMENTS

+Elemental damage bonuses ([Primed Fever Strike] and Melee Exposure) do not actually affect the component of 'true damage' on Bladestorm that bypasses armor and is instead bonus damage that is attenuated by armor (i.e. reduced by 10 at max 2700 armor). This will deal the full damage against unarmored enemies and the overguard component of enemies. [Primed Fever Strike] is therefore flexible for [Primed Smite Grineer] if specifically fighting only armored Grineer to maximise damage instances.

ATTACK SPEED

Attack Speed is now capped at 55% and Berserker Fury works but requires you to maintain stacks.
Spoiled Strike + Berserker Fury = 75% - 20% = 55%.

If you don't like the initial ramp up/slowness and don't plan on using status priming, you can swap Berserker Fury for Primed Fury and Condition Overload for Magnetic Rush.
Spoiled Strike + Primed Fury + Magnetic Rush = 55% + 20% - 20% = 55%

ARCANE

Crescendo in arcane slot, any rank is fine. If no Crescendo, alternatives include Melee Exposure or Melee Retaliation