I'd suggest stress testing what you can but don't make an official release date, setup the new server with nost coding and then just release it at a time when most people are sleeping, every single time a small group tries a massive release like this it becomes a shitshow that usually ends in taking the server down for days or weeks after that point. Just make it a silent release or say something on twitter after you put the server up and let it grow more naturally, everyone will get the news within a few hours or days of it coming up and the server won't get фекал on with 50,000 people trying to login and grab their name at the same time.
Nost is backing this and articles have already been written and published, a smooth launch is much more important to you than making a huge spectacle out of it.
