Best way to transfer $500k+ from Australia to Canada using btc?

I have a relative that potentially wants to do what the title says. Send a large amount of money overseas from Aus$ to Can$, and I was wondering how Bitcoin might be a good way to do this. Obviously the goal is to avoid exchange and wire fees etc between banks. I have only bought btc in small amounts, so first was wondering what is the best way to buy large amounts of btc with Aus$ and then be able to cash out into Can$. Are there any regulatory things that they should be aware of etc? Thanks.