Congrats on your new bunny! For such a long drive you will want to make sure he is comfortable. I woukd recommend put his litter box with lots of hay in his carrier. This will keep him comfortable but also give him something to munch on. He may not eat during the drive but just in case.
If you can have someone go with you one person can sit with the bunny and try to keep him calm.
When you get him home give him time and space to get acclimated. I know how exciting it is to have a new bunny and you just want to show him how much you love him but you have to earn his trust. Let him come to you. Just sit in his pen and let him get used to you.
For litter I love the hardwood stove pellets topped with hay. Also, itoften recommended to change your litter every 2-3 days. Bunnies eat the most tender hay on the first day but it is the tougher stuff that really wears down their teeth.
Good luck with your new bunny and I’d love to see pics when you get him home.