I will relocate to Hong Kong in July, and I am looking for a University class or a private school to improve my mandarin.
I am currently at a very basic level, in between HSK2 and HSK3, recognise about 300-500 words.

Is anyone aware of any program that starts from 5.30/6PM onwards where I can get a decent level of conversation in about 12-18 months time?

I heard CUHK has a part-time class in the evening, 2/3 hours a week, but not sure how much can I expect to learn.
Any other options in HK?
Good private school that can be recommended?