Andrew, there aren't any movies at this time which have discrete height or width channels. Receivers which have those features process content in the regular channels which is considered to be suitable for the height or width speakers, extract it and send it to those speakers.
Generally, if both QS and direct surrounds are used, the QSs are better placed as side surrounds to take advantage of their wider dispersion. On some material the more specific placement of direct speakers is better for effects meant to be heard from the back.
The M22s should be fine for a 10' listening distance in your size room. A room doesn't have to be "filled" with sound at your preferred level; that's only needed at your listening position. The listening distance should be equal to or slightly greater than the separation of the front speakers.
