Spark Inquisitor with new +2 Pierce Sanctified Relic

I was fortunate to drop a relic with +2 to Projectiles Pierce. I'm running Cold Conversion aura-stacker.

I am trying to determine what changes to make to my build based on this. Currently level 93, and just started filling into my 3rd large cluster.

Typically these builds run a pair of 4-node medium clusters with Aerodynamics & Streamlined. Aero gives +1 pierce and +10/+10 projectile speed/damage. I no longer need the +1 pierce on those, and the damage is minor. However I'm concerned about giving up the speed. The Streamlined half of the clusters seems unavoidable, as it gives +20/+20 speed/damage.

If I could pick up enough speed elsewhere then I could cut the clusters entirely, which would be huge. But that would probably have to be obtained with an Anoint, and the current best choice for that is the massive Champion of the Cause.

Has anyone else worked a Pierce relic into Spark? I'd appreciate any input on optimizing for that relic (or my build in general). Budget is kind of wonky because I was gifted MB but only have about 15-20 divs in the rest of the gear.

https://pobb.in/i42RuZpqKXLJ