Sound great and I went the same way for a while. Just be aware that steam on Linux can have issues with ntfs partitions. So I also went the the two drive route, much less of a headache.
Communities with >50% repost content are unsubscribed by me. If I have communities spamming my timeline with reposts, I just block em. Having to open at least two link and read the content on both sites just to get the info and understand the discussion/context is generally a huge waste of my time.