Few things I would change:

Alzner for a 5th round pick is basically giving him away. Bring that up to a 3rd and that makes more sense.

Kreider and Skjei are not going anywhere. The Rangers definitely want to keep them, since they are younger than Pacio and Benn. I know that Pacio is kind of going nowhere and that his peek might be already past, but you don't trade him for somebody who scores less than him.

Furthermore, Chucky for Girard and Smith doesn't make sense for both teams. Nashville would not be interested in Chucky and Montreal doesn't need another Left-handed D prospect (They already have Mete). Even worse, Smith would just be another plumber moving from the 4th to the 3rd line.

Last thing: Your title says 2018-2019, but you seem to have created the team in the 2017-2018 timeframe. There is an option when you create a team that allows you to begin on July 1st of the next season.