We are remodeling our kitchen and would like to move the kitchen sink from one outside wall (13 ft) to another outside wall (3ft) for a total distance of 16ft. Our concern is with the vent line and drain pipe. Currently both pipes are next to the sink, the drain pipe going down and the vent line going up through the roof. See attached pics. We would like to know if we can keep the drain and vent pipes in the same spot and run pipes to the new location, instead of reventing the roof in another spot. How far can these lines go and are there any issues with outside walls.