A:
The 5/0 will work good here. The 6/0 will work as well but will hang down below the belly more, which will actually act like a keel.
The 5/0 will also act like a keel but will be a little better in the weeds because it hangs tighter to the bait. Get one each. experiment. different size and weight will affect the action. Wobble and rate of fall will give you options depending on the mood of the fish.