Installing Water Lines for Shower

Today the plumbing is simple. We have to get the water from the poorly installed supply lines up to the mixing valve and on up to the shower head. This is my first time installing CPVC lines. While I had planned to transition the shower over to PEX, but could not acquire the tools and pipe. There is plenty of PEX-B offerings but the big box stores are acting like PEX-A no longer exists. So for supply logistics and price the CPVC became a better choice.