I have the speakers 3 ft. 4 in. from the back wall (can't go out farther due to cable length), 4 ft. from the sides & the speakers are 6 1/2 ft. apart. My problems are not at high listening levels. My volume levels are usually at 9 o'clock; cranking it up to me is between 11 and 12; everything seems to run out of steam past this point. I don't want to push it more in order to avoid clipping.
The amp is rated at 120W at 8 ohms, 240 @ 4 and 350 @ 2.
If I am going to need 200 hrs. break-in time, I think I'll borrow a friend's 5-disc player for awhile.