I don't know the exact location of your destination.
In general, the fastest way should be
2. Take 42C, and change for 40 / 73X / 235 / 278X / GMB 302 at Tai Wo Hau MTR Station.
Journey time for the first leg is about 35 mins.
GMB302 is preferrable as the stops are nearer to the industrial buildings.
Alternatively, you may take MTR,
and change for GMB 301 / 95K / Free shuttle bus for Cable TV Tower at Tusen Wan MTR Station.
This is a slightly slower way but you can surely arrive within 1 hour.
It is also a cheaper way provided that you are a student.
(Please note that the frequency of shuttle bus is about 15 mins)
Just think of another way, is your destination near to Tsuen Wan West Station?
If so, you may take MTR and change for West Rail at Mei Foo.