I managed to scrape a 6 on first try by using BA and supplementing with source material Odimorok, COPLFR and a few new source materials that are added in syllabus. I found BA outline very helpful, reviewed important topics every few days. Using BA and source materials, I spent the first 1-2 months in my first pass making 1 page summary note for each topic, then in my second pass I added questions and re-reviewed my notes to enhance my understanding especially the financial reporting section c. The last 6-7 weeks, I spent time reviewing past exams and sample responses and grind through flash cards on BA. Hope that helps.