This all sounds about right.
I look at a slot WR as the #3 WR. They often are not able to get off jams, and may not have excellent downfield speed.
Jerry Rice was not big. He was fast enough, althougth not a burner. I knew Jerry Rice. He was a friend of mine. You Randall Cobb are not Jerry Rice. (I only mention Rice because Cobb's limitations are not just size or even speed.)
I'm laying down the gauntlet for Cobb. I hate because I love. Show me you are more than a guy this year.