Will be travelling to Guangzhou via Hong Kong in October month for canton fair.

I am Indian Passport Holder.
My itinerary is Flight from Cochin to HK on 16 Oct & Return from HK on 3 Nov.
I would like to spend the first 14 days in Guangzhou and last 3 days return in HK.
My Question is
1) Since My flight will land at 20:30 on 16 Oct in HK. So do I cross the immigration and take bus/train to Guangzhou or wait for ferry next day at 11:00.
2) Do I need to apply for a HK visa . Since Indian passport holder are allowed 14 days free VOA & I am travelling back to India from HK after 17 days