Another consideration. Should the business plan be a document that is focused on selling an idea for a product or service? For many years I worked in a company that did not want anything in a business plan that could be construed as showing a bias towards or against a project. The mantra was to only present facts in the business plan. The Operations Research Department was there to review the analysis as being unbiased. To handle the "what if" scenarios or sensitivity analysis we prepared a supplemental analysis documents which were mostly financial oriented. Personally, I like a factual approach and use the presentation of the final document to point out the conservative aspects of the content.
Once you chose which one or more of the 7 you want to use and calculate exactly how much impact they have on meeting your plan, you would now have a definite approach on how to make your plan work. It seems simple. At that's what it's all about. It's about how to make your plan work the easiest and smartest way you can eliminating all the guesswork or trial and error methods. Want to increase your profit? This is a good way to do it. So, you see, once you decide which of the 7 ways you're going to do, then the only thing left for you to do is figure out how to make the one or ones you have chosen work.