Getting ready to finish taping and placing thinset over my cementboard seams in my shower remodel and figured I would dry fit my new shower head, which is a combo rain head/removable sprayer design. The problem is the arm for the removable sprayer is too close to the valve, which I didn't account for when I ordered this design (which I really like and really want to make work). My idea is to remove the top piece of cement board to expose the top of the shower pipe, cut the pipe a couple of inches below the top elbow joint, and reattach the pieces with a straight 1 in. sharkbite coupler which will effectively raise everything by an inch and keep intact the previous solder joints. This will also benefit me as the overhead rain shower only gives me about 1/2 inch of clearnace when I'm standing under it at it's current height. I don't really feel comfortable soldering an inch of copper pipe to accomplish the same thing. As well, this extension would still leave about 4 in. of cement board above the shower arm.

Is this a terrible idea? It is against code? Any of pieces of advice like just use a normal shower head you idiot? Thanks in advance.