what armor, weapon,race and skills should i go to? any guilds besides mage? who is the darkest most evil bride there is? what house would serve my creepy evil needs best?

This is all subjective information, but it really is dependent upon your playstyle. The most famous necromancer of all time was Mannimarco and he was a High Elf (Altmer). The Bretons start with the highest Conjuration level, but that is easily made up for when you consider how quickly you can level Conjuration using Soul Trap on a dead body over and over again. You could also use the Dark Brotherhood. Kill your target then Thrall them...quite evil. In addition to the obvious choice of Conjuration, it would be good to utilize Illusion. Something about bending people's minds to your will while violating all sorts of social norms with their dead body seems perfect for a necromancer. Regarding a bride? Choose who you want, kill them, and place their cold lifeless body on the bed in your home. It's a perfect place for the bride of a necromancer (this is a cop-out answer because I don't know). The house of choice for a necromancer must be Hjerim. I won't give any details on that due to spoilers.

Remember that playing as a necromancer really is about "role playing" a style. It's far from the most efficient or powerful character you can build, so if you're all about exploits and power gaming, necromancy probably isn't for you. If you're all about crossing lines that those fools in Morthal won't cross, then necromancy is definitely for you. Enjoy!

i love role play i just slaughtered everyone on my "The Crown Causes Madness" Role Play so i needed a new one

i would recommend breton for their innate magic resistance, and relying on conjuration(ofc) but also focusing heavily on using dead thrall + sanguin rose to conjure yourself up an armor. a true necromancer sits back and lets his minions do the dirty work though feel free to throw in some destruction in there just for fun.

Altmer. There are no better mages, imo, and the most famous Lich of all was a high elf so yeah... that's what I'd go with.