Hello and thanks in advance. We are in the process of having a Lennox villa vista high efficiency fireplace installed. I'm wondering if we were to cover the front vent, which is an option, and use the two 8" ducts on top of the unit to direct heat to our second floor will we have enough heat in the main family room/kitchen, the room that the unit is installed in, given we would be solely be relying on radiant heat of the unit. The room the unit is installed in is approximately 15x30 feet.

Thanks again