I transported frozen dough for ~9 hours this past Christmas. I usually bench proof and then cold ferment for several days. I treated the dough as usual for through the bench proof and then froze it in balls. I then got a cooler and dry ice and made sure the frozen dough was cold. Then when I got to my destination, I put the balls in the fridge and allowed them to thaw and then continue cold fermenting as usually. The end result was pretty similar to my normal, unfrozen dough, so that's my suggestion.