Ideal output db for all patches

What’s an ideal output db amount so that all my patches are equal in volume for my front of house guy?

The QC factory patches seems to be set to an average output of 0 dBu (-10 dBFS on the internal meters) which is fine but could be considered a bit low for the house guy. You could boost the outputs +6dB if that is the case. Also to notice is that the TRS outputs 3 and 4 are 6dB hotter (when run as balanced) compared to the XLR outputs 1-2.

Awesome thanks!