Jeff can get you better figures, but I am pretty sure that there are a lot of people that pass with just NINJA materials. The Books give a solid overview of everything that you need to know. The MCQ test bank, I swear by it, and the Notes and Audio Notes are well worth incorporating into anybody's study plan.
I have CPA Excel, but to be honest, I am not using it, I am now mainly relying on NINJA materials and supplementing with an online tutor site that has bundles of tutoring videos on specific topics for each section. The guy used to be a Becker instructor and he is really good. I use his videos if I am having trouble understanding the big picture of a specific topic. Otherwise I use the NINJA materials.
Many people pass with Ninja only. And a good chunk of those only use Ninja MCQ's. Looking back after my 6th exam, I probably could have passed with only MCQ's. It is intimidating at first when you score 40% on a session but you learn after a while. If I were you, I'd do every single Ninja MCQ section by section. That would almost guarantee a pass IMO. MCQ's are where 90% of my learning came from