The pass machine has a lecture series you can watch online. I used it for the peds board exam. That and some ASA questions and you should be fine. You would probably be fine with zero prep, but my peds only practice creates a fear of deficits.
The ACE questions are the same format as the MOCA exam, and there were even some of the same questions. I used 3 years worth of ACE questions and another question book with 1000 questions, by Hall and Chantigian. The Hall book had 5 answers instead of 4, and the questions were harder than the actual exam. If you can do those questions, you should have no trouble passing.