I don't want to put a damper on things, put people aren't mentioning that older adopted children, particularly children that come out of foster care, often come with a lot of emotional baggage. Along with that baggage also comes some behavioral issues. I am not saying that it is not worth it, but I am saying that you need to be prepared, sometimes the transition can be rough. Hopefully your local agency will discuss this and the need for family counseling with you.
In addition, in this area if you are willing to be placed with a child that is African American, biracial, or Latino, your placement is often quicker, even with infants. If you are African American yourself your placement is even quicker.