I want to add an outlet near my toilet for a bidet. There is an existing 20 amp GFCI outlet near the door. It is on a separate circuit from the lights. It is connected to another GFCI in the master bedroom. There is also a PVC pipe (vent pipe) running up the wall behind the mirror from the sink.
Are there any problems with placing the new 20 amp outlet (non-GFCI) near the toilet and running 12 ga Romex up the wall, through several studs, around the PVC pipe, and tapping off the existing outlet (using the load terminals)? Are there any major pitfalls/code violations with this approach? Any advice would be much appreciated!