If I'm Windsor, I'm comparing Luchuk to a former OHL OA sinper who was dealt two years ago - Stephen Harper. In that deal, it was Harper and a 7th for a former 8th round pick (I believe) in Krassey, plus two 2nds, a 3rd, and a 5th.
Since I believe Luchuk is more valuable, I'd up that a bit. I'd be looking at (from SSM) - Flint 2nd 2019, Gue 2nd 2020, Wsr 2nd 2021, SSM 3rd 2018, SSM 4th in 2019, and a prospect like Ryan Roth. I'd LIKE a top prospect but I'd imagine that's more reserved for Raddysh.
Luckuk is a big part of Windsor's proven PK and he's having a consistent career season. While he's an OA, he's the real deal and worth every penny.