No, you'll need servers and enough network capacity to handle the load, an understanding and supportive hosting provider, a law degree or enough money to pay somebody with one to keep you out of court/jail/prison, a network of degenerates to provide traffic and content and/or a copy of the existing 4chan content, a stomach of steel to deal with the content moderation duties, and a moral compass so warped you think hosting degrading and illegal content is "just liberalism and freedom of speech" and not something that needs a second thought by any right-minded person.
But sure, if you have all that and the source code, you're all set. Godspeed!
But sure, if you have all that and the source code, you're all set. Godspeed!