[Gustoo]

Human is a good race for either of these. Dark Elf gets to do some cool quests and overall their evil path is more robust, and is probably the choice I would pick. They're close to good places and their starting city has everything an evil guy needs to thrive. A human necro is an outcast while a dark elf necro is a pillar of the community.

For a wizard, I wouldn't be a dark elf, I would be a gnome probably.

For a Cleric, I would be a halfling of course, but really all the cleric races are pretty great. Dark elf is kinda sucky because it is KOS to many places and doesn't really get much advantage for it. Halfling can hide, high elf has more wisdom, and so on.

Really, choose the starting city that you want to be your home and enjoy.