Remember the proverbial expression 'not seeing the wood for the trees'? You need to see the 'wood' first, then delve in and start examining the individual 'trees', meaning the individual items which you will be breaking down later. So a great point is to make sure that you have that overarching vision _ and if you cannot find one, then maybe it is an indication that you are obsessing on a few technical aspects that do not necessarily make up a whole business as you had imagined it. A business that makes sense and is going to be sustainable in the future is one that has that clear vision within which all the smaller parts contribute to make it successful.
Organization _How is the business structured? Who are the principals and the principal shareholders? What authority does each principal have in the venture? What are management's qualifications? What is the job description for each position? What does the organizational chart look like? Possible Data Sources: on_line templates for job descriptions & organizational chart.