Ready to make the jump

I'm not that knowledgeable on all the young guys. Out of this list, how many are ready for full time roles on game 1 and how many are ready to come up at some point in the year to take a spot?

Forwards:

McGroarty

Zonnon

Howe

Hallander

Koivunen

Defense:

Pickering

Brunicke

Goalie:

Murashov - seems like the obvious one