Stanley to Central is only a few kilometres, although you do have mountains in the way! That time of the morning expect about 15 - 20 mins by minibus. Finding a parking space can take you more than that! As someone who does drive here a bit of advice.
If you are working in the same place day in day out, or even just on the island all day, don't worry about a car, it's only an extra hassle you don't need and will stress you out. If you are travelling around the whole of HK including Kowloon and the NT then it can be a quicker and more relaxing experience. Even then it depends where you are going. If I'm working around Mongkok, Prince Edward or TST areas I never take the car, well rarely. The train is king. But getting to some part of NT or even some parts of outer Kowloon is faster by car.
Don;t forget if you are here you will need to pay for parking where you live (may be included though) and you will have to pay wherever you go to park also. So double bubble and can be expensive!