Top 4 is a mess so he'll probably win one or two just from getting to play Murray in a final or Djokovic at Wimbledon. Unless Nadal storms back, whcih seems to me the most likely thing since his ego "injury" from losing to Rosol should be behind him.
I expect AO: Djokovic def. Murray RG: Nadal def. Ferrer Wimb: Fed d. Nadal USO: Fed d. Isner. 2 slams to Fed