Thinking of adopting a couple of cats, advice welcome.

I’m thinking of getting a cat or two. Ideally two sisters that will play and get along with each other. I’ve been talking with someone a few hours away about rehoming a pair of Siamese sisters, but that isn’t set in stone yet. Here are some questions and thoughts I have, but I would welcome any advice you might have for someone who hasn’t had pets in years. I really want to use horse bedding as cat litter. I’m looking at getting this litter box.. I’ve watched some YouTube videos on the topic, but any thoughts or gotchas? If I end up getting kittens from three hours away, what gear will I need to bring to make the trip successful? One big cat carrier? Two separate ones? If they seem calm, would it be okay for a passenger to let them out in the car on the way home? Or would it be best to keep them in the carriers? I’ve gone through this page and I’ve got a few of their suggestions in a list and ready to order. Anything else that I should look at getting? Supplies, tools, furniture, toys? Best way to choose a vet? Cheapest? There’s one very close to my house but there are a number of options and I could start making calls. Once the cats can have kibble, what’s a good way to choose the kind to buy? What should I avoid and look out for? Also, what would be some great names for a pair of sisters? Thanks!!

Cross-posted from ClubsAll