I am trying to help my parents add an in-law suite to their basement to include a kitchenette and a washer/dryer. There is a 3" drain running through the wall that has a bathroom from the first floor running through it. I have drawn a quick diagram of what we are thinking will work for this scenario. Could anyone confirm if this is sufficient or if there are any issues. I'm not crazy about having to use 2 AAV's but trying to run a vent pipe from this location would be a nightmare. Thanks in advance.