Let me add a few additional suggestions: Do a few extra water changes before you go and get everything "cleaned" up, that is to say, free of detritus. Try to minimize any "cycle" from occurring during or after your trip. Assuming your fish are all fat and healthy, skip feeding them for 24 to 48 hours before the trip. This helps to reduce the waste they would otherwise release during transport. Take extra water. If you run into to trouble - see below - having extra water for an emergency water change could be life saving. Keep your livestock spread out if possible. Taking extra volume is a hassle for sure, but if one container goes bad it is good not to have all of your eggs in one basket. Beware of livestock that you can't really tell if they are ok or not; keep them separate if possible. I transported a trash can full of fish a short distance. At the last minute I tossed in my turbo grazer that was closed up, not knowing that it had just died. The operculum came loose during the trip, hydrogen sulfide was released and my fish were all dead or dying by the time I arrived. I had no spare water on hand and continued to lose fish before I could get them out of the hydrogen sulfide contaminated water.
One last bit, dress lightly and keep your vehicle warm as you travel. This minimizes the work your heater needs to do. Best of luck!