Foster to Adopt in Washington State

My husband and I are trying to decide between international and foster adoption. We are willing to take any sex, or race, and to work with kids with RAD, ADD, sexual abuse history ect. I am also a stay at home mom, which I know helps. BUT we have 2 children already (3 and 4) and in order not to disrupt birth order tooo much only want to go to age 5. No older. We've heard horror stories about how there are NO children that age available unless you are willing to take in an extremely medically fragile or disabled child and it could take YEARS to find a match. International often takes 2 years and its soo much more expensive. We'd much rather foster adopt. I'd love to hear any of your experience with WA state and what children are available.