Hi, how much it will cost from airport (cab) to mini hotel at causeway bay - 8 Sun Wui Road?

We are arriving on Thursday, 10th January morning. There are 5 of us, is it okay if we use 1 cab only? In the table, it is mentioned that we must use the Red cab to Causeway Bay and it cost HKD 280 - is the amount is exactly HKD 280 or it would be vary? Last thing, how many minutes it will take from airport to our hotel? Thank you.