You would launch a campaign asking that you would write this many articles with these titles and publish them in your magazine. You can launch parallel campaigns, with lists of articles, for example 10 different campaigns with different themes. Also show your previous work. Also say that you'll give the articles away as creative commons. If the public actually wants what you're giving, you'll get funded and have readers as well. If they don't, you'll know that what you're doing isn't worthwhile to customers and you can think of seeking funding for something else.