I'd probably go with TY Hilton then… It's a crowded receiving corps, but he has better potential IMO. Miller is another boom or bust pick, like last year when he didn't live up to the hype. Not sure what has changed to help his situation. And Lee has a decent chance, but gambling on rookie WR's is a longshot to say the least. Only really worth it if they have an elite QB. I'd steer clear of that whenever I can. I think the only rookie WR with big upside this season is Cooks.
It's preseason. A lot of rookies will look good but then don't produce much during the season. Benjamin does have a thin WR corps ahead of him so he does have pretty good upside.