Setting up the QC for a stereo acoustic guitar help needed

I have a Dimarzio angel system on my guitar…Piezo and magnetic that go stereo out. I have been running it into a Grace Felix to the QC and then out into a powercab 212+. I don’t think that I am using the QC to it’s fullest on this. Any suggestions on what this might look like? Separate channels into the Powercab one to each speaker or blend then together?
Maybe finish this equation…stereo guitar signal → Grace Felix → QC--------?