LB Question

I recently drafted Posluszny, K. Dansby, and Brian Cushing for my starting 3 LBs.  However, I noticed that Jerod Mayo, Mychal Kendricks, Thomas Davis, Wesley Woodyard, and L. Timmons are on waivers.  Should I replace any of my LBs with any of them on waivers?  I was thinking about dropping Cushing for Mayo, but wanted to get an expert opinion before doing so.  Your thoughts??

Scoring:
Tackles - 1 pt
Tackle Assist - 0.5
Sack - 3
Int - 3
FF - 1.5
FR - 1.5

Thanks in advance!

I have Cushing and Mayo at 8 and 9 in my rankings, respectively. Although they both have had their fair share of injuries, I think Mayo is the safer play given his tackle numbers are buoyed by the NE stat crew. However, Cushing's big play potential and relative lack of tackle competition present a better upside. That said, if you are risk averse go with Mayo otherwise go with Cushing who presents a bit more risk, but more upside.