Thanks for all the responses.

So I've decided that sending it by air cargo won't be so bad after all. It's likely that we'll be travelling on Malaysia Airlines. I've never used air cargo before - how does it work? Can I just walk in to the Malaysia Airlines cargo office?

UPDATE: I managed to get into contact with a helpful person named Mark at Jetta Express in Brisbane. I plan to drive to the Jetta Express office in Brisbane with all my luggage. He says that if my TV is packed securely in its original packaging, it should be fine since it survived the trip from China or wherever to Australia in the first place.