The gluten-free flour mixture that I always use is a mixture of rice flour, tapioca flour, & potato flour.
* 6 cups Brown Rice Flour (I have learned that fine rice flour doesn't work the same)
* 2 cups Potato Flour
* 1 cup Tapioca Flour
I mix them and put them large tupperware bin. I usually, okay, okay my husband usually mixes a ton at a time for me. I buy 50lb bags of each, it has been the cheapest way for me. I buy it from Honeyville.