We bought a house that we love, except for one thing....It has rock stucco walls inside and out. The rocks are small pebbles and plaster I believe. It resembles houses in Arizona and similar climates. The main issue is the living room. We cant decide which route to take about changing the wall surface. Is it more effective to just drywall over or remove the rock plaster and then drywall. We have also had suggestions of just plastering over the stucco. Please help!!!!!