Mcavoy > Andersson with ease for me and he should definitely be one of your 3. With Sutter fired, no guarantee the PP is run how it was this past year, not that Andersson shouldn't be on it but you never know.
Timo Meier as well has to be one of them for me. I consider him basically a 40/40 man.
Lastly, I think i'd keep Marchand, he's still so elite and had a rough year coming back from injury. A full off season should give him even more juice.