I am trying to plumb a coffee machine off the cold water underneath my kitchen sink. What is the easiest way to plumb this in without having to do any soldering? I am planning to run a 3/8" PEX (John Guest) tube from this source line to the espresso machine. Should I replace the stop valve at the point labeled "A" with a two outlet stop valve and plumb the PEX tube directly into it with a stainless steel compression insert stiffener? Should I cut the pipe at point "C" and use a Sharkbite slip tee adapter that I connect the 3/8" PEX to (adding a valve in the PEX pathway immediately after that connection)? Is there a better way?