What are my chances at Hong Kong PolyU and CityU

I will be graduate high school in 2019 and I currently live in the US. I think I am considered a HK local because both my parents have HK citizenship. My junior GPA is a 3.0 and I will be taking the SAT on October 6th. I guessing a high 1200’s or low 1300’s. What are my chances of accpetence and should I apply early decision for PolyU to boost rate?