1. Worthwhile, but if it is a very heavy burden to your family, then Fudan may be a good choice, and I know Shanghai students feel happy to stay in Shanghai anyway.
2. Well, it's hard to say. HK's legal system is different, which is based on the English common law, supplemented by local legislation. But as just reported yesterday, Mainland & HK recognize each other's legal procedures with effect from 1 Aug, 2008 onwards.
And HKU's law is famous, very great career prospective.
3. I think so, as long as you can speak Cantonese after graduation. [CR]