But that's 8 times the price of a Chromecast (if you include the keyboard and mouse).
For me, a Chromecast is very close to the perfect device, as my iPad lives in the living room most of the time and allows me to conveniently control the Chromecast, without any keyboards or mice lying around. While it's not as powerful or flexible as your setup, I prefer its convenience. It does everything I need it to (Netflix, Youtube, other players [ZDF Mediathek etc], play local files with Plex or Videostream for Chrome, ...), and does so hassle-free. For surfing, I prefer the iPad over the TV anyway.