Keo, being a junior now, I suggest you go to regular World History, and basically leave yourself with only 1 or 2 AP/honors courses for sophomore year. You can add more next year if you feel ready, but there's no reason to be stressed like that in sophomore year.
If you don't take my advice, fine, but please tell me what you resolve to do, because I hate to see you freaking out like this, and school has just started.