>>These QS8s are difficult to temporaily place in areas because of the way they're designed without having holes all over the walls. The rep told me to set them on a ladder and try different areas but I'm somehow not understanding how with the woofers mounted top and bottom.

Take the bottom grill off and put the QS's on a couple of large soup cans.

I don't think a difference of a couple of feet is going to make any difference. QS's are REALLY tolerant. I still have one on the soup cans and one hanging on the wall 3 feet higher.

M60ti, VP180, QS8, M2ti, EP500, PC-Plus 20-39
M5HP, M40ti, Sierra-1
LFR1100 active, ADA1500-4 and -8