Treat it as a marathon and start training now. Not kidding here at all, if you have never done anything like this before, you probably won't make it on your first go if you don't start riding long rides now. Start with a 200 mile ride out and back with only fuel stops. Then increase it by 100 miles and so on. This will get your body and mind in shape for the 1000 miles. Yep, sitting here just talking about it you're thinking....."Well 1000 miles is only 6 fuel stops, no problem..." In my case that's down to 4 stops. Let me tell you, it's a LOT harder than it seems. Especially when you get down to the last 200 miles when you're watching the odometer and it seems as if it isn't moving at all. Your ass is killing you, your back is burning and spasming, your eyes are staying closed longer and longer with every blink.........
Water/fluids at every stop
Light snacks at every fuel stop, NO HEAVY MEALS
Leave at night after a good DAYS sleep, so you finish in the daylight when you're most tired
Take a picture at every gas station with the receipt