So far the rams best wr is DX and he deserves to be the starter. austin pettis is also doing good al  only one game. the line up should be:

Wr 1:DX/Brandon Gibson

Wr 2:Pettis/MSW

Slot:Amendola if he returns or greg salas.

After mark clayton returns and amendola has surgery then 

Wr 1:Clayton/Gibson

Wr2:DX/MSW

Slot:Pettis or Salas whoever is doing better.

Also salas should be used for screens passes and quick drop offs because he can block and do this http://www.youtube.com/watch?v=ViJTPrAtLBg