Pre-loading 4x5 Film Holders (?)

I shoot just one kind of film. My main stock is held in the freezer. My 'working' stock is held in the fridge. All the above is held in ziplocked freezer bags. I also keep loaded film holders in the fridge - each indiviidually bagged in a ziplocked freezer bag. The holder doesn't come out of the bag until I'm ready to put it in the camera, after which it goes straight back in the bag. I hate dust.