comment on my team and waiver wire help

Hi Guru! Following is my team lineup in 12 team IDP keeper league. Please comment on my team and I have one bench spot due to J Stewart IR and plan to add safety. Which S would be the best wire pick up? Thanks,

QB: Cam Newton, Sam Bradford, EJ Manuel
RB: D Martin, M Forte, L Miller, B Tate, J Stewart
WR: R Cobb, M Colston, T Smith, J Gordon, J Blackmon
TE: J Finley, T Eifert
K: P Dawson
LB: L Kueckly, D Johnson, D Washington, D Smith, E Henderson
S: J Cyprien, A Bethea
CB: C Finnegan, T Mathieu

Waiver Wire Safeties: T Polamalu, T Decoud, D Manning, K Vaccaro, M Elam, P Chung

While there are some big names out there at Safety.  I'd go with Elam or Chung.

QB- pray Cam doesn't get hurt.
RB- Nice haul for a 12 team league.
WR- You'll be happy with this group.
TE- Good potential with both.
LB- Studs especially the first two right out of the box.
S- Bethea is typically a high tackle guy.  I like Cyprien's potential.
CB- Finnegan is solid.  Will Mathieu live up to the hype?

See if there is Aaron Williams, Duke Ibenacho or J inhedigbo. All 3 starters now at Strong safety.

I like Chung of the players listed.