DO not forget to invest points in Heal, as it boost your Negative Spellpower. other skills u should think of: Spellcraft, Balance, UMD and Concentration. i wouldnt spend a single point in Jump. u get the spell, thats +30, plus the +8 from Epic lvls and any Strength modifier u have, u have capped it.
Do not forget about Spell Penetration Feats. PMs are useless without them, in case u want to use holds and instakills. a good time to incest in the Spell Pene feat(s) would be mid lvls, around Gianthold i guess.
Lesser Death Aura and Death Aura stack, but the Lesser Aura is not big deal.. try it and see if u like it for yourself.
and the best advice OF ALL, would be:
DO NOT GO SHIRADI!!!