I don't have a dark room either unfortunately, as our bathroom has a huge skylight and there's always some light getting in. I'd call it dark enough for something less sensitive than film, although I could do an experiment tonight and see.
As for the bag, I bought a tank that does 2x120 rolls, so it is a bit of a squeeze as it is. I'll ferret around for a cardboard box and give that a try if I find something suitable. And I'd hope that the moisture would all be trapped in the gloves rather than making the film sticky. I think if I could load simpler and faster and get out of the bag sooner it would be the ideal solution.
Does anyone know who sells reels with wide flanges in Aus? Or charges less than $45 to ship here?