We're running nearly identical lists! I used to run G for KGrip and I've tried R for 'Blasts/Bolts/Mancers, but I cut back to just plain old UW for now (I still run UWr if I'm expecting lots of mirror).

I run a Jitte main instead of a Sword. I considered SoFaF, but I don't like 3 equipment, it's too much.

I went 4 Surgicals, 4 Spell Pierce in the board. I was running 3 Surgicals for a long time, but I face a lot of Dredge, so the 4th really helps. I usually figure I need to hit 2 against Dredge (either hardcast or Snap-backed) within the first 3/4 turns. Flusterstorm is much more powerful against Storm/High Tide, but I like Spell Pierce because it can hit Artifacts/Enchantments. If the meta ever shifts to heavy storm, I will definitely go back to Flusterstorm.