My own daughter is 27 and thinks it's a great idea, so I don't have any children at home. Also, I work for CPS, so I cannot be a foster parent. It is considered a conflict of interests. And you are sadly misinformed about what foster parents "make." Here, the board payment is $400 - $450 a month per child, depending on the age of the child, and the foster parent must have an independent source of income. Privately contracted therapeutic foster parents are compensated at a significantly higher rate, but they are dealing with children with more severe problems that require a great deal of time and energy and are only allowed to take one or two kids at a time in most cases, and one of them has to be home/available all the time.
Have you already made up your mind?