the HKMC does vary things from time to time as they see fit. sound familiar? But do you really want to commit yourself to a property worth more than 6M...
There is a good property forum on asiaxpat.com, check it out, there is some good info available there. Talk to as many people as you can at work, find out how they did it, which banker, mortgage broker, good lawyers, estate agents, phone numbers etc. Have your contacts sorted and it will make your life a heap easier.
There are some very knowledgeable people out there that know the system very well and can bend it to fit!