7 Keepers - Who do I target in trades?

I can keep 7 players from the previous year. These are the players I’m choosing between for keepers:

Derek Henry
Jamaal Williams
Keenan Allen
Josh Gordon
Amari Cooper
Corey Davis
Evan Engram

Which 7 would you keep? I’m considering packaging guys to get some upgrades. Who would you trade and who would be the targets? I’m thinking of trading Cooper and Henry and maybe a pick for a top WR like Hopkins or adding more RB depth.

Half PPR. Keepers are for life.