Would depend on how much sacks are scored. But Smith and Timmons are the two best IDP's of the two options. While Dix gives you a solid DB as well. Lamur is good but I have seen him come and go on teams through the season. I actually let him go in my one dynasty league. Then picked him up this past week in another. Griffen and Cushing don't get me excited at all. So if I was good at WR and needed IDP I would want option 1.
Foot, you indicated that this is for a redraft league. At this point, if I was the owner of Timmons & Smith, then I'd hang onto them for the stretch run.