Stereo Mains, two sets of Stereo delays, and mono side-fills (total of 7 channels amongst 4 amp racks). For basic use, we only need the mains since it's not meant for volume. We also have stereo floor subs that would only be used by major events, so those don't have to be part of the dante network and can simply use two outputs from our stage box
It sounds like you're in a position where you'd be best served by hiring an integration company. It's easy to install a processor wrong. It takes skill and experience to do it right. The most powerful systems like Q-Sys really take training and experience to install properly. It's not the kind of thing you get as a box sale.