I submitted all the proof I could think of.. about 20 pieces of proof ranging from stuff I ordered online sent to me, Google maps tracking my location and showing where I live/shop around, recent pictures taken with time stamp, recent bank statement and internet bill, conversations of my wife and I talking about coming home, going out to do errands together, and 3 new letters with 2 being from our neighbors and 1 being from our roommate who started living with us even before we filed the application. I hope it's enough.