I recently moved from Chicago to Massachusetts and had 12 medium to large fish (5 in spotted pims to a 12.5 in jag cichlid) in 2 large rubbermaid containers. Each had 2 battery powered pumps mounted to the top and I changed 50% of the water once a day. I added salt and stress coat and did 50% daily water changes. They were in those bins for a week without eating because we had to wait for the movers and I'm thrilled to say they all survived in good shape. Point being, I think your guys should be fine. Dark rubbermaid, battery-operated air pumps (which are always good to have handy in case of power outages) and some stress coat and you'll be golden.