He should start in the ECHL. It is still an upgrade in league quality from the MHL, he is still playing against men, he can get used to NA ice, and the Growlers are a great organization which can give him PP and PK time. Maybe after the TDL when there may be a few more spots open it makes sense to call him up, but until then, I think the Growlers are a better spot for him.
I would consider sending Gogolev down there too if we are going to continue playing Clifford, Clune, and Kopacka over him. Those three should not be getting any kind of regular ice time at this point.