The plan is to use five channels with one Powersoft M28Q on each.
Looks like it could work. It looks like they have much lower ratings with inductive loads, but those amps have a high pf. I wouldn't push the amps hard on it, as you'll be running it near the edge of its capabilities. What kind of enclosure are you going to put it in? What are you hooking up to the amps? That's a lot of channels.