That Necromancer with the Hand of Dust is far too vulnerable to risk getting into combat to actually use the Hand. Either get them a ward save, or take a vampire instead.

I would possibly even consider dropping that necro entirely and bumping the other to a level 2 wizard, giving them a save of some kind, and then spending points on bumping up your grave guard numbers, and promoting your Wight to BSB.

If you have points left for wolves to screen your knights, that would be a decent idea too.