I am studying a degree in University of Upper Iowa (HK campus), major in Management for a year already. That university's ranking is above average in USA. (I have checked the ranking book of USA University) The teachers and students are very nice. Students may allow to take 0-3 subject in a term (8 weeks). Probably it may be spend 2-3 years to finish, depends on how many subject you take in one term.
They provide major in Management, Accounting, Marketing, Psychology, and Information System.
That is a good University for part time studying. The professors understand us because we don't have too much time to study hard. It is not difficult to pass but of course you need to ready to spend time and effort on that if you want to get the A grade and the first hon..
Are your course is through the HKU Space? As my colleague is studying the MBA course in the University of London and will be graduated by Aug after finished the thesis. I am studying the MPA course from HK PolyU and hope to finish by this year end.