Don't know a lot about Beenligh. However we have an IP which has a reputation in having ferals in it. Growth has been great and we haven't had any major problems with our tenant. Our family also has a property on the Gold Coast that is known as one of the better suburbs and we had a huge issue with one of our tenants. (would call the tenant feral).
If the numbers make sense, don't be too concerned if the area is known for ferals. Ferals can rent any property. It's not like you need to live in the area, just have the rent paid for. If the tenant causes issues you can always kick them out (can be a long process) however in my experience the so called feral suburbs aren't any worse for tenants than nice suburbs.