With all of the crystals, dispels, and mana based spells...I would definitely add an arcane ring. And then I'd change the opening a little and do ring/crystal, forge/crystal, harmonize forge/?? and you'd be set to go
Harmonize the Forge and throw a Reinforce or Enchantment Transfusion on it so it has extra life or you can move the Harmonize. If possible, get the Sentry out early and guard with it's Intercept.