Congrats on the move!!
Pack your car with essentials.....sleeping bags or linens, washcloths/towels, paper plates, utensils, pots & pans if you don't want to order out pizza. Have everything in the car/truck that's easy to get to which means you won't have to unpack the whole truck and dig thru boxes to find things you need to have for the first night or two in your new house.
Easy to have mail forwarded --- but do it online! you'll have a written confirmation from the PO.
Animals -- carry them in a crate. Take them into the house then lead (or carry the cat) around the new house after everything settles down. Do NOT lock a cat into a bedroom or bathroom for days. That's traumatic! Carrying them around and showing them their new territory will help them understand what's happening. I've moved numerous cats/dogs and never had a problem with one running away.