No reason to hesitate. Any 5.1 system you get now is likely to adapt to the new home, unless the new room is massively larger. At the least, you'll be able to expand it to rear surrounds and/or Atmos. The SR6013 (or the Denon 3600) can drive 9 channels and process 11. So you have a lot of...
I find reflecting (Atmos Enabled) speakers aren't worth much, unless you have no option. Others disagree. How high is the ceiling and what is it made of?
Is it possible to move the viewing position forward? 18' is a LONG viewing distance, plus having space behind opens up a lot of great...
first, to repeat myself, I highly recommend you check out the SR 6013, which Best Buy (the last time I checked) had for $899, while they last.
Also, is the room 12' wide and 18' deep or the other way around, and is there any space behind the viewing position?
I'm making quick posts when I have...
Are you totally locked into Klipsch? There are a lot of brands out there, and don't get into the mindset that Klipsch is the pinnacle of them all. Not knocking them, exactly, just that there a LOT of alternatives.