Ok, so I am re doing my bathroom, and Installing a new acrylic shower pan in place of the old shower and the drain of course needs to be repositioned. It have to extend further by an additional 4 inches or so and also needs to move over about the same distance. I have included a diagram to clarify. The existing plumbing is copper, including the P trap with a PVC going vertically to the shower drain. The extension would be simple enough, just cut the pipe behind the P trap, and add a pipe length, but moving it over , or back or whatever, is where I'm not sure. so questions 1. Is it okay to install an elbow there to redirect it? 2. should i just redo a new P trap with Pvc and tie it into the copper with the rubber sleeve and install an elbow behind the P trap to redirect it or leave the copper P trap and extend with new copper? 3. Is there a flexible pipe/tubing I can use instead?