There are many reasons for utilizing such a document. Is the final document going to be about implementing a decision already having been reached or is it about analysis and recommendations for a newly proposed activity. As noted above, a finished document may be for internal or external purposes. Externally they are often used to solicit funding for a start_up or joint venture. Whatever the purpose, do not confuse effort with say, a marketing or a production plan.
Strategic Planning & Goals: The first step is to identify the key company goals which will be the over_arching direction of the plan. These goals should be focused on three areas: financial, growth initiatives and alignment to the company's vision/mission. This provides the overall direction of the company by establishing high_level goals that will be achieved by tactical initiatives. The overall plan should be 1 to 3 years with measurement mileposts monthly, quarterly and annually. While the plan is put in place at the onset of the year, it should be constantly re_forecast with actual results throughout the year.