First, try to find a white melitta filter rather than stationery as a white balance target as most copier or printer papers aren't quite neutral.
If your Godox holds it's colour temp with reduced output, you won't need to change the w/b in a studio setting. The same goes for modifiers. If they are neutral they won't affect the colour, but cheap or old modifiers tend to give a slight yellow cast.
I tend to use auto w/b, but shoot a colorchecker passport when I have changed something significantly in the setup. W/b then takes place as a part of my postprocessing. The auto w/b is good enough for the histograms to be usable in camera with the low-contrast preset I use for my raw files. As I use Adobe software that discards everything but w/b of the Nikon settings in the Nef files, this makes things easy for me.
Hi Peter, Thanks for the reply. When you say try the Melitta filter do you mean those coffee filter thingies?. I'm a tea drinker so I'll have to go get some if thats the case.