Gosh, JohnK always beats me to recommend the Pioneer Elite receivers! Yes, I second his suggestion of the 53TX.
The QS series surrounds can easily be wall-mounted, and they come with a special wall-mounting bracket.
As for the subwoofer, I suggest that you also look at the Hsu subs, particularly the VTF-2 and the
new STF series.
Although 16-gauge speaker wires are likely sufficient for your run length, I would be super-conservative here and go with 14-gauge or above.
PartsExpress.com has quality wires at better prices than my local Home Depot or RadioShack.
