Holy crap…you wake up at 3.30am, study for 5 hours, and work 14 hour days? If you take into consideration transportation times, you must be sleeping around 3 hours a day. Even with 5 Redbulls,I don't see how your body can last.
Nonetheless, it's amazing you were able to pass 3 parts of the CPA already with such a busy schedule.
I'm not a pharmacist by any means, but it seems like Adderall would work for you — because you're focused and determined already. Some people think it's a magic pill that will make you study, but it isn't. I took it once a few years back at and it definitely helped me to focus. I was just blazing through this textbook that I was reading, and even when my friends wanted me to take a smoke break, I just wanted to concentrate on my study.
It's no miracle drug, however. Just like drinking alcohol gives you a hangover and smoking weed makes you super lazy, Adderall has its side effects, too. There is always a price to pay; Adderall destroys your appetite and will throw off your sleep schedule even more. If your sleep schedule is wacky enough as it is, I'd stay away from the Adderall.
All I can say is, I've tried Adderall a few times before in the past and I still prefer to study without it, even if it means I'm taking a lot more time to study on my own.
But if you say you have a time constraint, it wouldn't hurt to try it out. You may be concentrating a lot harder and reading faster, but Adderall won't increase your memory retention. In fact, it may hinder it since you're going through more material at a faster rate.