CB question

Our league requires CB position. I wonder whether I could drop G Quinn for any of following CBs

Justin Kings, Stl (7 tackles, 1 sack: week 1, 9 tackles: week2)
Tim Jennings, Chi (8 tackles: week 1, 9 tackles: week2)
J Lacey (6 tackles: week 1, 9 tackles: week2)

Those 3 CBs seem to contribute tackles consistently for the last two weeks.

The reason why I selected Quinn is that he is tagged CB while he is playing as SS in Hou. However, he does not seem to have too many tackle oppurtunities.

i really like how King has looked os far. it is a tough choice but i may lean toward grabbing king. he seems to be in a good situation and has played really well these first 2 weeks.