I want to build a wall in a finished basement, and trying to decide whether to build it in place, or build and raise it. I'd prefer to build in place as I'm concerned I'll scratch up the floor and/or ceiling going with the latter option. My issue is the wall I want to build will be up against a staircase (about 3.5" space) and if I frame in place not sure how I can add the drywall (or alternative) afterwards. What's the best way to go about this?