When you plan your calendar, plan for a ratio of 'value content' spread over a time period. For example, 4 value posts, 2 reference posts, and 1 book review in a month. It gives you the balance, variety, and the flexibility to adapt anything new that you may want to post along the way.

What you consider as your best value content today, may grow in next few weeks. It is true for other writers on board. So, plan for the right mix (ratio) in your calendar!