Have you ever moved house, over a distance of 350 miles, with four cats?
If you haven't, and are thinking about it, I'll give you some advice: don't.
If you really must move, try to get the cats to arrange their own transport.
Focus on yourself instead. You'll have plenty to think about as it is, and the cats will only get in the way with their sarcasm and hairballs.
I moved from Norfolk to Devon with four cats and it felt like such an impossible ordeal, part of me believes that I actually died somewhere along the way and am now living in some kind of afterlife: very much like real life, but a little slower moving, and with slightly clearer air. "That's just the West Country," I've been told, but I can't be 100% certain.