Mage/Dark Wizard Help Around Level 75 Build

So...I wanna be one of those fancy people who can solo Bob right when they get the quest and can solo Death at lowish levels. I want to know if this is a good Mage build for soloing bosses, or at least lasting a while and getting good damage.

Helmet: Spectre
Chestplate: Millennium
Leggings: Crystal
Boots: Sodeta Boots

Weapon: Ethereal (I know this is awful for bosses atm, but somebody said something about bosses being redone after the Gameplay Update to apply more to powders).

Ring: Concentration
Ring: Jester Ring
Bracelet: Jester Bracelet
Necklace: Jester Necklace

Keep in mind I'm looking for a good BOSS build not good build overall. Well, that would be nice too...xD

Tell me if you have any suggestions!!

 

This is probably the best Intel build you are going to get at your level. Soloing bob shouldn't be much a problem.

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Well the helmet, use spectre, but you'll have to invest 35 in agi

 

I have to invest 30 anyway for Crystal. No biggie...