I'm trying to squeeze multi-functionality into one unit, so, yea, its confusing to me too
The wood structure will be a smoker that I will lift off when I want to use the rocket cooker. The firebox for the smoker is at the end of the long tube. This allows the smoke to cool before filling the smoke chamber. So that will be the cool smoker. I can do the hot smoking by using the short tube connected to the rocket cooker.
The grill space will double as a fireplace - the grates and lids will be removable.
But its the cooker that I'm concerned about. I hope its designed in a way that will quickly and efficiently bring 5-10 gallons of liquid to a boil.
Joe