Lord Imperitant is bad. Like. "Not even good chaff" bad. So ditch that idea lol.
A Knight-Arcanum or Stormcoven wouldnt hurt for Wizard stuff.
Having a plan for what each unit is going to do in a match will help your choices, too.
#Stormcast list to build towards
glossy root
kind quest
I went for the knight arcanum, would it still be best to take default stormcast manifestations?