"The social media component can be done with https://wordpress.org/plugins... as for the redirect issue, there's a lot of things that will do something like what you're asking. That said, I'm going to recommend you try out PressForward, which will let you collect posts, turn them into drafts and handle the redirect for you. But I'm biased on that, because I'm the dev behind PressForward." - Aram Zucker-Scharff