I'm planning on replacing the old pipes in my 90 year old house with copper this summer. My plan is to make all the pipe up in sections with the bends in the right place and prefab it into 2 or 3 large units. Once that's done, I was going to remove the old pipe and assemble the new stuff into a large complete unit, so as to minimize time without water. The pressure regulator in the house is newer, although the home inspector told me on the walk through that it was about 30 lbs. higher than it should be, so I guess I better adjust that while changing out the pipes. Am I on the right trabk here?