Need Help - Big Decisions

I'm in a dynasty league and we start a 3-4 or 4-3 defense every week. I have used your rankings all year and am 10-4 and the #3 seed in a 14 team league. Here is the scoring:

4 QB Sack, 2 1\2 QB Sack, 1 solo tackle, 0.5 assisted tackle, 3 interception, 2 pass defended, 3 fumble recovery, 2 forced fumble, 10 safety, 2 blocked FG attempt, PAT attempt, punt, 6 defensive touchdown

I need help at the following positions even after looking at your rankings for the week!

DT - Brandon Mebane or Vince Wilfork
OLB - Jerod Mayo, Russell Allen, or Mychal Kendricks (need 2)
ILB - Larry Foote, Peery Riley, or Brandon Spikes (need 2)
S - Mark Barron, Kam Chancellor, Reshad Jones (need 2)
CB - Alterraun Verner, Tramon Williams, EJ Biggers, Janoris Jenkins, Corey Graham (Need 2)

I just picked up Biggers and Graham based on your weekly rankings. At De I'm starting Elvis Dumervil and Carlos Dunalp. (Frostee Rucker is available on Waivers and I have Will Smith on my bench)

Thanks for your work in the IDP world and for your help here.

Mebane
Mayo, Allen
Foote, Riley
Chancellor, Jones
Biggers, Graham (but I'd be careful as Graham may not be nearly as valuable if Jimmy Smith plays)

*I'd have a backup plan if Smith plays. I like McClain, Leonard Johnson, and Patrick Peterson as well this week.