Thinking about trying wireless speakers for the back of 5.1 system.

Hi all,

I have dogs and no easy way to run speaker wires for back speakers. I do have AC power near enough, so that won’t be a problem. 
Current HT system is A Denon AVR and Klispch Front and center speakers in a 16x20 room with an 8’ ceiling.
 I know Klispch has some wireless speakers and I have tried four times to get an answer from them and no one has responded!  I haven’t asked SVS or anyone else about their stuff because I thought I should keep everyone in the same family, but does anyone have a mixed speakers in their HT system?

 I’m open to all thoughts.

JD