Besides the last two trades everything seems really realistic. The Yotes aren't getting rid of Raanta and there's no reason that Vegas would help St.Louis with that deal. I believe instead of Bouwmeester to the Jackets you should do Steen there with some money retained on him (like 1 mil) because this way the Jackets get an immediate scoring replacement for Panarin because who knows if Klim is NHL ready. Then ship Bouw to Arizona, Buffalo or Ottawa for cap relief. The Oilers trade I like except maybe u put Robert Thomas in that deal instead of Barb so Edmonton accepts it, then you put Jordan Kyrou at centre because I read somewhere that St.Louis would be using him at centre. Also no need to sign Grabner, ik your going for all speed but cap relief is more important and Fabbri can play 3rd LW and shift Skinner to 3rd RW. All in all this would be one of the most frightening lineups in the entire NHL.

Bouwmeester has a NMC, why would he waive it to go to Columbus or Arizona?

On the Edmonton trade, that's really heavily in the Blues favour. Paryko does have a lot of value but so does Nurse, and Draisaitl has been one of the most productive young centers in the league the last two years.
RNH + Nurse for Paryko + Fabbri + Barbashev maybe.

Any GM insane enough to give Mike Green 4 x 6 can have him the guy just came off major neck surgery vertebrae no way i'd give him that kind of deal. 2 x 5 at the very most.