Best way to add some external drive pedals if I'm using the 4 cable method?

I have three external drive pedals that I would like to use with my Quad Cortex. I currently run the QC into a Victory amp effects loop, and at the moment the pedals just run directly into the input of the QC.

Is this the best way to proceed, or should I be using them in an effects loop? If so, what is the best way to set this up? When i attempted it previously there was no way to add the effects loop that the pedals were in to the preset I was building.