Take a look at the cost of rent in HK and you will quickly find your conclusion. Upgrade to JFO will be 5+ years. My advice, stay where you are and look at other options. Without housing in HK, after acquiring your licensing and experience, I think it would be a poor decision financially to make this move. Quality of life vs income, you'd be better off with airline opportunities in Europe. I'm sure your brother has said something similar. With your experience, only accept a direct entry SO package with housing.
Cheers