Klazy_Labbit
Raven, cause if he goes to the snakes , he will not have peace to study and get stronger. And in raven He can still get in fights with potter over lily , and get conections with the black sisters.with the escuse of him being heir prince, after all the prince are still a pure blood house ( with a high talent for making potions in their blood line)even tough its has only severus and his mother. Do remember that even if there are a lot of pure blood wizards, Voldemort only would want to get the most talented of them.
It depends on the course you want to give the story. * Slytherin: Severus will be in the eye of the storm, since as you said, Voldemort has total control over that House. Severus would have less freedom but he could make many contacts and 'allies'. * Ravenclaw: Severus will have relatively stable growth without many ups and downs. Severus would have a lot of free time to dedicate to his magical studies but so much tranquility would make the story a bit boring. And author, I would like to remind you of something. There are several people who know Severus' mother and in the wizarding world there are several ways to find out that he is not a pureblood. So if you include the mc in slytherin and this is discovered it would be a little more difficult for Severus to carry out his plans quietly. (Google translate)
From the description you have given of the two houses my preference is the first (Slitherin) and it shows that you have put more focus on this house, if you put it in revenclaw I don't think there is much plot, I also wanted to ask, have you thought about a love interest? I personally would like you to propose Bellatrix lestrange (born in 1951 and severus in 1960, I think?) change the plot a bit and make them be the same age. I have not found fanfictions with Bellatrix as an MC romance and if you take the madness out of her she is a beauty (don't deny it)
it seems like his ambition is to learn magic and in the end figure out how to become immortal, so it seems it is better for him to go to ravenclaw where he can learn without all the the politicising, plus, sending him to ravenclaw opens many doors and sub stories with story filling. I dunno, your the boss, but I like ravenclaw personally