He's clearly taller than 5'11 which is on his eliteprospects page.
He certainly has flashes of brilliance, now he needs to work on his consistency, that will be the key.
I think so far he had been playing on a stacked roster, but he should be getting more playing time next year. He did get increase in playing time towards end of the year, I felt, and he is actually decent at faceoffs, as far as I saw.
Now it's just staying patient with him, let him develop his consistency, and he should have a chance to be a middle 6 player down the road.