It could be all at the same. You could have a column or a List for Ideas. You could create a calendar with day's that could be used for a special posting like "world Nutella day" (okay that might be not your topic but I hope you get what I was trying to explain. Or use the calendar to keep the focus of constant postings.
On the other hand, a content plan can offer you a great timetable for your actual writing. Add tasks for "research", "writing" or "add pictures" until the article is published.
You can also add a template for your article and its structure. So it's everything to keep your head in the game and focus on what's important.