i might not be understanding the prices the OP has stated..
80000 HKD per month and is still worried about the living standards?
Maybe my Google is not working but from what I have converted, 80000 HKD is around Â£6000-Â£6400.
I live in London, and knowing people who are on Â£3K a month, is living a nice life in central London.
I plan to move to HK, and if Â£6k per month is not enough to live on in HK, I may aswell stopping thinking about moving there....