Seriously guys are suggesting having in laws permanently not like few months is good thing? This is big no no in my opinion . If they are planning to settle down permanently you should talk to your wife openly about it , and have them settle down in apartment or rental close by and move on with their own way of life.

I have made clear to my wife that if they ever intend to move permanently they have to live in their own place. I ain't living with in laws .