1day tour in Shenzhen from HK in Sept. Visit Window of world and LO Wo. Please advise

I suggest that you get up early in the morning. Exit Hong Kong from Lo Wo and the take subway to Shenzhen Window of the World. at around 3 or 4pm, you get back to Lo Wo by subway and do some shopping at the Dongmen commercial street. then go back to Hong Kong at night.