I do 2 things with the miniDSP:I consider sub PEQ and a "house curve" as different things. Applying PEQ prior to the calibration is reasonable. Applying a house curve is best done with a custom target after the calibration.
1. I take a combined sub measure in REW and use the EQ tab to add a room curve and then export and load it into the miniDSP output PEQ
2. I remeasure and then go into the input PEQ of the miniDSP and adjust peaks/dips more manually, measuring between changes
Are both of these what you consider to be PEQ? Which or both should I still perform before running DL?