Start JJ Nelson, Larry Fitzgerald, or Tevin Coleman?

Decision: Pick a WR2 and FLEX.

Here is my Team for Context:

QB: Dak Prescott
RB1: Le’Veon Bell
RB2: Todd Gurley
WR1: Michael Crabtree
WR2: JJ Nelson
TE: Jordan Reed
FLEX: Tevin Coleman

Alex Smith
Rob Kelley
Doug Martin
Larry Fitzgerald
Eric Ebron

My thinking: Coleman has a good floor and has TD potential. He is also playing the Lions which should be a high scoring game.

Hard time trusting Larry but the matchup is also decent vs. Dallas.

Just wanted to hear some thoughts and opinions and first time posting to the Forum.