Newby Student landing 10.30 pm -Hong Kong- need to get to Guangzhou by following day latest?

I know it is too late

Im thinking maybe stay at a cheap hostel, close to HKG or travel to GZ if its easy.

A) should I go to Shenzen rather for a hostel room(cheaper)?

B) how would I get there reasonably? bus/train?

C) do they travel that late?

D) fastest transport to GZ?

E) do trains travel that late at night?


F) where are cheap single room hostels in either Hong Kong or Shenzen if I sleep close overnight and travel in the morning to GZ?