My speakers are along the short wall

<15ft>
----------------------
/Sub..S..TV..S........./
/--------------------/
/--------------------/
/-------14ft---------/
/--------------------/
/R-----couch-------R/
/--------------------/
/--------------------/
/--------28ft--------/
/--------------///////
/------------- stairs/
/--------------///////
/--------------///////
----------------------

Here is my layout...
I cannot go with M80, a little out of budget.
My budget started at $1800 but I have already dropped $1300 on receiver and Sub. This stuff gets expensive!!!!

I will listen to HT 95% of the time, will not need to fill room, just to seating position that is shown in graph. Have been thinking of make a pulldown curtain behind couch to seperate room and keep sound up front...Any suggestions on that subject??

What is the major difference in the two rear spearkers??
QS8 and CM170, Could I go with the M50 upfront or spend a little extra and get the M60s??

I can get B-stock Ascends for $1100 340's upfront with 170 rears...How bad are B-stocks??

PLEASE HELP I AM FROM CHILLICOTHE OHIO IN THE HILLS...Do not know of anyone in this area with these speakers


HK AVR 630 SVS 20-39PCi