We will be reworking the small rear room in our house. It was an addition done probably about 40 years ago. Our guess is that it probably started off as a screened in porch add-on, and then was later framed and sealed in as living space. The interior walls of this room are a combination of the original outdoor stucco and a small portion was done in paneling. Part of our task is to fill in two doorways that we no long wish to have, and to fill the space where a wall heater once was. Beyond the fill-ins we want drywall for walls rather than stucco paneling. What is the better approach? Bashing out the stucco, and demolishing the panelling before dryalling? Or drywall over the stucco and panels?