certainly we need 1-2 corners. 
but again the consistently good teams/organizations are built from the inside out. 
we need linemen-bot O and D and LBs  first. We have zero depth on the D line--if Dareus or williams go down we are awful there. We have one legit LB and the rest a bunch of scrubs. We need a tackle and more depth on the O line. 
Yes we could use CBs and a WR......but we need those way less than interior players.