Day trip to Zhongshan from zhuhai

Will be staying in zhuhai on 25/4 till 29/4.
What would u recommend places to go for day trip to Zhongshan n also places to go in zhuhai. For transport how to go Zhongshan
From zhuhai. We have a group of 8 pax.
From Macau airport to go zhuhai. Do u recommend by bus to custom in the late evening arrival at 8pm. Will the custom be crowded at that time. How long have to wait for clearance. Please advise. Thank you.