Which players should i keep?

I'm in a keeper league and i can only keep 5 players but don't know who.My players are Matt Helback,Carson Palmer,Danny Woodhead,Adrian Peterson,Kenneth Darby,Pierre Thomas,Javid Best,Santana Moss,Kenny Britt,Chris Chambers,Kevin Walter,Brad Smith,Demaryius Thomas,Ted Ginn,Mercedes Lewis,Kevin Boss, and Chris Cooley.I was thinking about keeping AP,woodhead,Javid,Britt,and Santana Moss.So who should i keep?