Thanks! I think I'm fine with the sprinklers. I'll look for the one for the spigot.For irrigation, you will need a back flow device to be legal. You can't legally hook up irrigation without protection to the water supply. It's a safety hazard for you and you neighbors.
My last concern I think is how to reinforce the entire structure so that we don't eventually compromise the pipe and wall from the hose pulling against it. Any ideas? Something to mount on the wall? Screw into the patio?