Singapore - fly into Baiyun Guangzhou - ferry from Zhongshan Harbour into HK China Ferry Terminal

Hello, could you please confirm if the following itinerary is acceptable for the 144 Hour Visa-Free Transit as a Canadian Passport Holder:

Departing Singapore - flying into Baiyun Guangzhou to stay for 4 or 5 nights nights within the Guangzhou province with family who has residences in Zhongshan (and maybe 1 day trip to Toishan with 1 overnight hotel stay) - then take the ferry from Zhongshan Harbour into HK China Ferry Terminal via advanced online ferry ticket through the Zhongshan-Hong Kong Passenger Shipping Co-op site?

We are a family of 2 adults and 2 children aged 11 and 13. Can we all qualify for the 144 hour visa free transit on this itinerary?