As others have brought up, create your first channel and page to figure out what you're doing, how long it takes to do it, and how much effort you have to put in to maintain it. Then plan your full set of channels/pages, and the outcomes you are projecting--how long will it take to train yourself about certain methods, when does your project start or end, what are your traffic or earnings goals?
Do you expect to outsource much of your efforts to gigs or VAs, bots and micro workers? If you will be doing many routine mini jobs yourself, how will you fight off procrastination or boredom? One way to workaround that is to time your major active tasks to earlier in the day (when you have the energy, and need to focus), but do the drudgery stuff which may not need as much minute attention to the end of the day, such as when watching TV or video clips on YouTube. Then one weekend day a week review your immediate progress, and every few months review the general status of your project.
