go to Hong kong downtown from shenzhen airport
I will arrive Shenzhen airport on Sep 24, on 12.45 and i want to go to Hong kong downtown and I already search that there are 3 ways to go there. The first one is use direct bus from shenzhen airport, the second one is use bus to shekou port and use ferry on 14.00 to Hong kong terminal and the last one is use bus to Lochu and connect MTR in Hong kong. However, I can not find the information that I can use port in shenzhen airport to Hong Kong or not.
My questions are
1. If I want to go to Hong kong downtown from shenzhen airport, which route is use the least time??
2. If I take direct bus from Shenzhen airport to Hong Kong Kowloon, How much I have to pay and what is the time for this route??
3. If I want to go to Hong kong downtown from shenzhen airport by ferry on Shekou port, what is the distance and time use of bus from shenzhen airport to shekou port?? and How frequency of each bus??
4. From shenzhen airport to Hong Kong downtown, if I want to use ferry, Are there any port that faster than shekou port??
Thanks for your kind help.