Don't bother withe the LON set if you're playing a wizard - the synergy from the class sets are much better. Even the freebie Firebird set will have you up in the GR40 s without any trouble.
LoN is great for t10 on a Wiz, get an ancient magefist, cindercoat, firebird source, hexing pants then ancient everything else and you will out damage Tal Rasha explosive blast build, only problem is that it's LoN so just so hard to gear it's unreal.