Is the steering clunk a known issue? Mine does it alot now and it seemes like the steering shaft. Is it a safety issue?
You should at least put some transmission stop leak in your transmission that you can find at your local parts store. Your leak will only continue to get worse. It might just be the seal that seals the transmission pan which wouldn't be such a big expense. You might at least want to check for this to see where the leak might be the next time the oil is changed. Just my humble opinion and 2 cents.