I don't see anything wrong with your speaker choice; KEF makes some nice products. Your concern about the speakers distance from the wall is indeed a valid one because the soundstage tends to open up when there are fewer boundaries to contend with. I suspect it will be a problem with any speaker you choose though, given the placement limitations, so perhaps you should go for the speakers you're most comfortable with. In your case it may not be as big an issue though because usage is directly inverse to what is the most demanding from a SQ perspective. Music has more critical listeners, followed by movies and then gaming. Since the most sensitive source material will be the least used it might not be all that noticeable.