All of this is to be done in stages, Stilly. If we proceed with our plan to use blown cellulose insulation, we need to have the exterior wall wiring done first. Changing or adding on will be a misery otherwise. Since the bathroom partition walls are the only interior walls we can afford right now, the exterior wall wiring is all we're planning on at the moment. Interior wall wiring can be easily done from the basement whenever we're ready for it.