I'm installing plywood beadboard in a bathroom. The beadboard will be installed on top of the baseboard for aesthetic reasons and I'll also be installing a chair rail and top cap. The floors in the bathroom are out of level along 3 of the 4 walls. For the right finished look, I obviously want to have the chair rail/top cap to be pretty close to dead level. By mounting the baseboard flush with the floor and the beadboard right on top of that, I will obviously be out of parallel with my layout line for the top of the beadboard and, thus, the chair rail/top cap. This will also create a bad appearance where the perpendicular beads meet the door casing which is plumb. I suppose my two choices are 1) taper cut the baseboard before installing to make it level and square with the door casings or 2) just mount the baseboard flush with the floor and cut each section of plywood to size. Does this sound right? Any tips from the pros out there?