Which FA's to pick up?

I'm filling in some bye spots and need to pick up a LB and S/CB.  Any help would be appreciated.

Available LB's:
Ryan Kerrigan
David Harris
Paul Posluszny
Chad Greenway
Sean Weatherspoon

Available DB's:
Kyle Arrington
Eric Weddle
Jordan Babineaux
DeAngelo Hall

Thanks for any help!

Anyone?

my opin: paul p. and I originally picked up k arrington but dropped him for a  Moore-S/DB for the falcon. I figured rodgers will be throwing.

I would go after Posluszny and Arrington.