Well I think getting help from friends or family is definitely step one! Of course plan ahead for food, water, changes to bedding in carriers and a quick set up when you arrive at your destination.
If you're driving my concerns would be comfort in the carriers and keeping everyone eating/healthy. Plan out where you can stop and have the animals get out of their travel carriers. It might be worth training the cats to work with a leash so they can stretch their legs more often. Have a small collapsable run on hand for the pigs so they can move around on stops. Important for them to move around, burn energy and keep their digestive systems moving.
Not sure if you have access to pet friendly hotels or air bnbs, though that would be an easier way to make sure all your animal are able to have a reprieve from the confines of a carrier.