Basically this is the best way to play a assassin type character in skyrim for me, these perks as a vampire. Necromage obviously boosts everything, enchantments, potion length/magnitude, spell duration/magnitude, perks etc.
Problem is getting to 70 restoration, restoration I've found is the slowest levelling skill even if you use it all the time. I would pay for training then pickpocket (Colette at winterhold or Carcette at the vigilant hall) up to level 51, then go to High Hrothgar and stand in the wind whilst healing. Use as many restoration enchantments as you can find/steal with the Mage stone active. Not a big fan of power levelling but I think it's necessary to do as early on as you can, so it affects future perks.
Illusion and conjuration work well together, fury/frenzy the enemies to kill each other then raise the dead to finish the battle. At high levels (illusion perked) you will be able to use mayhem and hysteria on everything due to the vampire boost and if you took the illusion perks after being a necrovamp you can use harmony on everything you come across. Necromage boosts the spell effectiveness on undead by 25% and being a necrovamp boosts the hypnotic gaze, aspect of terror, rage and kindred mage perks.
Given the mayhem will affect all draugr and any human enemy you come across you can use mayhem at the beginning of the dungeon and affect everything.
Only the two smithing perks so you can improve what light armor/daggers you find, you can reach the armor cap if you feel you need to. As a vamp you can equip multiple thieves/linwe's/nightingale/guild master hoods to improve your armor rating, it's a bit cheap and you can play fine on master without maximum armor rating because your sneaking.
Alchemy for poisons and potions, always start battles with poisons as your weapons aren't going to be super strong. I'd stay away from the brotherhood gloves as they make you to strong, x30 damage is to much IMO and ruins the game a little, even on master.
I'd say Altmer for the race for the extra magicka and illusion bonus, but Dunmer are a good choice too (fire resistance). Argonian water breathing could be useful, but the resist disease/poison you get from a few races are useless as vampires are immune to both. Race isn't massively important tbh, Khajits and Argonians look good as vamps as they get huge sabre like teeth.
Basically that's it, just thought I'd share.

