2019 Keepers - Scoop up Cooper Kupp?

I’m the #1 seed going into the playoffs, have a bye this week. Cooper Kupp is a free agent as he is on the IR. Is it dumb to scoop him up so I can keep him next year for a 7th round? Also thinking about grabbing Pettis for the same reason.

I’ve got my defense and handcuffs, so I feel like I have 1 or two spots I could burn: