Gluten Free flour on-the-go

My go-to GF flour mix. 
I AlWAYS have a big bag of this in the fridge ready to go

Flour mix:

3 cups if Sorghum flour (I've used  oat flour (blended oats) instead of Sorghum - worked fine)
3 cups White Rice flour
3 cups Topica flour
3 cups glutinous rice flour (original recipe with sweet rice)
3 Tbps of Xanthan gum

I always have a big bag prepared all ready to go.