I am not sure what you mean by “Due to the lack of being able to to this in the OSPI firmware,” — if you assign a zone to the parallel group, it can run at the same time with any other zone. So if you assign all 7 zones to the Parallel group, they can all run at the same time. Again, I would not recommend running this many zones together, so you will have to do it at your own risk (we’ve never tested running this many zones at the same time over long period of time). If your power adapter can supply this much current, it should be ok.