PPR Playoff Flex Start

My starting RBs are Gordon and McCoy, starting WR are Dez and Fitzgerald

In the flex spot who would you start…

Alfred Morris, Dion Lewis, TY Hilton, or Chris Hogan?

Also - bonus question - Witten or Cook at TE?

Thanks y’all! Good luck to everyone in the first week of their playoff matchups! Except for my opponent, may his team crumble and fall…