Don't let these responses discourage you, only YOU know your chances of passing all 4 exams in two months best. It is DEFINITELY possible, as I did it myself. I knew that I was generally a good standardized test taker (and good ‘crammer' for tests), so I decided to try to get them over with as quickly as possible. I DO NOT recommend my study practices to anybody else, nor would I suggest that anybody follow the plan I outline below if you want to pass all four exams. Like I said, only YOU know how well you can cram/perform on these exams.
I only used Becker for all of my studying. Basically, I spent about 10-15 hours going through the Becker materials for each exam (taking notes on any specific equations or terms I would need to memorize), then another 10-15 hours just doing Becker test questions (and reading all of the details about the questions I missed). My final 2-3 hours before each exam I just studied my notes and memorized the equations, terms, etc. that I had written down. Also note that it helps significantly that I was able to take the exams during my last semester in college (plenty of time, and all classes were fresh in my mind). My GPA was a 4.0.
So I was basically able to cram for 2-3 days straight and then walk into each test, then dump the material from my mind shortly after. 🙂 The most time I spent studying was for FAR, and I spent about 40 hours over 3 days before my exam. I was fortunate enough to pass all of the exams with a 90+ the first time around, within about 6 weeks total (with MANY days in between of little to no studying).
Like I said, it all comes down to how well you know your self. Are you a person that can cram a bunch of material into your brain quickly? Do you remember a lot of the material from school? We are the ‘standardized testing' generation (and I thank God for that), so how well do you perform on standardized tests?
Moral of the story, it is DEFINITELY do-able and even reasonably attainable to complete all four exams in 2 months, if you are in the right situation.
Best of Luck!