Adding enclosed heated underbelly. Can it be done?

I'll be doing my tank area next Spring. I plan to make a steel frame, install aluminum panels, insulate inside the panels, and add tank heaters/heat tape. My goal is to make the tank and drain area completely enclosed so that it's operational in the Winter. The under belly on mine is already a continuous sheet of aluminum. On top of that sheet is a layer of 3/4" Celotex. I insulated the floor joist area with extruded foam. With the laminate flooring, it isn't difficult to get the floor up to temp.