I have been invited to write a book chapter in an edited volume relating to my field of work. I have a paper ready that I have not published and was planning to submit it soon. So I am wondering is it worth to use that article for the book chapter as both are on the same topic or is it in a sense a waste of a journal paper as book chapters might not be seen to have the same academic value? What should I do should i instead send the ready paper to a journal for a review and write a book chapter based on a couple papers i have published for instance?
Generally speaking where does a book chapter stand? Is it something between a conference paper and a full-fledged journal article? Or does does it have the same value in your opinion?