The answer to WWW is not to instruct unless you actually want to instruct. Don't do it for the hours, although they will help with some jobs. Do it because you want to be an instructor and it is an amazing job. Extremely underpaid, but really very good fun and not nearly as unsafe as WWW suggests (I don't know anyone who has been hurt doing it, and I know a lot of instructors. Eacch one who has had an aircraft problem got safely to Earth. No danger from the students hav actually been realised).