I don't think statutory stuff is any of your concern if you have the necessary skill set required in HK. i.e. any companies here that needs Australian related expertise, i.e. tax, legal, business networks etc (which I would say is rather rare)
Local boutique CF houses here provides financial advisory mainly to China/HK business and Chinese knowledge is a must. 7 day work week are not unheard of. If you are talking about CF at MNC, then again, MNC based here would most likely be dealing with China as well.
Accounting standard is not an issue, at least from my perspective. Anyone with a proper accounting certification should have the ability to read up the HKAS and figure out the requirement. Also at you stage, I assume quite a few years of work experience, I would looking at your experience and not your certification. Find a job that can fit you first and the rest will take care of itself