Welcome Elias,
I'll echo what some of the others have mentioned. Since your couch will be pretty much against the back wall, I'm not sure having a 6.1 or 7.1 setup would be worth it...you really want some space between you and the rear speakers to get the full affect. I would suggest a 5.1 system for now as the Qs4 or Qs8 design will give you an unbelievable experience. If you place them to the left and right of the listening position, the quadpolar design will wrap you in sound, and the rear tweeter should bounce off the back wall. I have 4 Qs8's but have like 6 or more feet to my rear speakers.
