Definitely make sure you know the major areas of each Becker section. You'll definitely see journal entry questions and/or simulations, so familiarizing yourself with as many entries as possible is a plus.
I would recommend really nailing down the government and not-for-profit sections, particularly if you didn't learn any of it in school or elsewhere. They claim that is 16-24% of the exam.
Make sure you're comfortable with time-value of money questions, because you'll likely see those whether it's leases or bonds or whatever else.
Know the depreciation methods for sure, because those can be thrown at you in different types of questions (straight depreciation calculation, change in method, error correction, etc).
At a certain point I'll feel like I'm listing all the content in the book, so I'll stop there. But I think you probably can get a feel for what's important based on the textbook and focus of the HW in Becker.
When it comes to reviewing in Becker, a lot of people find that the simulations don't help as much as the MCQ so I would definitely prioritize the MCQ. I personally redid all the simulations, and it probably helped me strengthen some areas, but it really doesn't translate that well to the actual exam simulations because by all accounts they're much different and more difficult. Do as many of those cumulative progress tests as you can, or rework MCQ otherwise because they really do help a lot.
I assume you'll be taking the Becker practice exams (if you haven't already), so I'll throw in a note about those. The MCQ are probably harder than what you'll see on the actual exam, but don't let the simulations fool you because the Becker practice exam simulations are a cakewalk compared to what you'll likely see come exam day. Also, don't get too hung up on your practice exam scores, a lot of people seem to do about 10-12 points better than their Becker practice exam scores. Personally, I scored an 87 on the first and an 86 on the second, but a 97 on the actual exam.
Good luck!