I think you'll make the playoffs, and after that it's anyone's.
West Ham will finish 3rd, and you may well finish 6. Over 2 legs I'd probably fancy West Ham to go through, but you can't underestimate the crushing disappointment of so narrowly missing out on the automatics.
Reading and Southampton will be the two automatics, and then I'm not overly bothered about who goes up in the playoffs - providing it's not Leicester. I wouldn't mind Cardiff or Blackpool going up.