I definitely know how you feel. Like you I'm an overseas Chinese and I was bored of working/living the daily routine in Canada so I first went to China for a couple of years and now find myself working in HK. I love it.
I think with your qualifications and ROA, you won't have a problem finding a job. If you have a place to stay in HK already, then I would definitely come over and look for jobs patiently. The economy in HK is getting better now and salaries are looking to go up. It's a good time to come.
Good luck with the job search!
Take a look at my website if you're interested...
www.maskofchina.com/hk