If I were born in Tamriel with a similar personality as me right now:
Dark Elf - They're cultured, have the whole House loyalty structure, and favors those who are with merit rather than a mercantile or brawn based society. Every house has a specialty and you can join the house that represents your specialty. Not to mention that the Dark Elves can adapt to changing cultures and environments while still sticking to tradition. They did what my ancestors(Chosun Korea) failed to do.
For Archetype, I'd go Nightblade - I'm a fitness and agility person rather than brute force. In schoolyard fights, I always think ahead as well and attack using human anatomy as a base. Kind of a nerd in that sense and I'm good with book smarts. Only problem is that I don't read books but that's another story

Faction, I'd go College of Winterhold - They're living a pretty nice lifestyle. The students are all nice one way or another, even the braggart, and I WUB Brelyna. The professors have a nice, immersive way of teaching rather than memorization. Other than the cold, which I can deal with pretty easily, it's a fairly safe area. Just stay away from anyone who wants to "test" a spell on me.
Morality - Neutral, just like in real life. There's no such thing as the good guys and bad guys in my book. I try not to pledge loyalty to anyone who doesn't deserve it. As such, I pledge loyalty to the College of Winterhold since they teach me but even as a Nightblade, I will never side with the Dark Brotherhood. They're religious assassins who don't work towards my interests and besides, the chances of me being forced to kill my loved ones is there.
Religion - Probably worship Azura or a Daedric Lord who's realm isn't filled with chaotic machinations of evil. Maybe Hermaeus Mora but since I'm a Dunmer, I'd most likely go with Azura. She's a powerful Daedra but also not abusive of her servants. If that fails, I'll worship Talos.
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This describes "me" as well as possible given the Tamriel Environment. I would join the Dark Brotherhood but that just isn't me. Maybe if they were a sort of flexible assassin organization where you don't have to take a job if you don't like it. But no, they follow a rigid god.