I think that it covers mostly everything in world history class. Your state may have different standards, but I know that those were just about all the major topics I learned in my AP world history class. Check you state standards and see if there is anything else you need to cover for world history.
It would take a TON of studying, but if you’re really disciplined I think it would be possible. On a scale of 1-5 I think world history is a 3. It’s not insanely hard, but it’s not a subject that you can just breeze by. If you can get the concepts, then it becomes a lot easier. A helpful studying tip would be keeping a notebook of key terms and definitions. It helped me out in AP World.