Easiest WsK running necro gear:
Wizardspike (Hel rune, if no block)
Homunculus (PDiamond, or if you're really that rich use an Um)
Thundergod's vigor
That's it. Fill the rest of the slots with +skills and/or MF, torch, anni, etc.
I did a WsK run with ONLY those three items, and in hardcore, and I was just fine. Skeletons got a little weak without the +skills pumping them into the indestructible range, but I had a really beefy merc and revives so it wasn't even a problem.
The best part about using Wizzy is that it gets you really close to the 75% FCR breakpoint. Just put on mages(For more CE power) or Trang's claw and a FCR/Mana/whatever ring. Put on two FCR rings, Vipermagi and a 5%FCR amulet and you hit the last FCR breakpoint possible on a necromancer.
Without the Viper (Say, Enigma?) you would need 35 FCR from your amulet+hat slot which is kind of tough unless you're a crafting wizard.
Actually, it's really tough to hit 125% when wearing Enigma without using some really trick gear... not advised unless you've got tons of runes to burn trading for the stuff or crafting in huge amounts or gambling forever for your golemlords amulets/circlets of the apprentice/magus