Greg olsen and randy moss for Vincent Jackson, Rowdy White, Beannie Wells and Vernon Davies. Do it?

My other WR are Nate Washington, Torry Holt and Antonio Bryant. This means Jackson and White would be starters. My other TE is Kellen Winslow so Vernon Davies is really just a filler. And my RB's are Kevin Smith, Joseph Addai and Cedric Benson. It's my first league so I fear the other players are trying to rip me off