You can pick up the Y adapter at Home Depot. I am not sure about the 1/4" reducer. They ship pretty quick so I would call them to see if can be added.
It took about 30 minutes to install and test. If you haven't used the quick fittings before they can be a bit tricky until you do it once. On the top where the hose goes in is a ring that is used to remove the hose. It can be white or gray. Pull up on the ring and the hose removes easily. To reinstall just push the hose in. The pressure switch has a plug installed that removes the same way.
