Love to hear the Quads with the atmaspheres! Ralph says it should be a good combo.
I used to have 988's, and I'll share a few things I learned along the way.
- I also raised mine off the floor, but found that they lost too much bass when raised more than 10"
- I was shocked to find that they sounded better with better power cords. I made my own from VH Audio DIY stuff, and it really made a difference.
- Sound also benefited significantly from diffusors on the back wall. I made my own out of balsa wood (one of my threads describes this). Taming the back wave is important, but I found absorption to suck too much out (in my case).
Hope that is helpful. Good luck! Peter