Hi I'm a HK vetern.
Where are you staying?
Head over to Lockhart Road, Wanchai any day of the week things get busier after 10 pm
Here are some bars to visit off the top of my head:
HK Cafe Jaffe Road its a narrow street off Lockhart Road
Escape used to be called Fenwicks off Lockhart Road near the junction basement bar
Amazonia next junction off Lockhart Road
Dusk till Dawn occasional WG can be found but it is a great bar
The bridge gets going after 3am
Plus there about 6 or 7 more bars that I can't remember the name of, but its all in the same area and some of these bars change their name from time to time.
Girls you'll find mainly: Philippines, Thai, Laos, Colombian, Brazilian
you'll be fine in Wanchai for punting. Price ranges Short time HKD 1,000 - 1,500 overnight 1,500 upwards. A lot depends on you and the girl time of night, hotel location.
Rule number one for Hong Kong Punting. Never ever ever go into those black Curtain bars on the street where the mamsan is inviting you in. These are tourist traps, controlled by Triads for purpose of money laundering. Beer costs HKD 10 whilst a drink for the girl costs HKD 1,000 This is the only real advice you need. Everything else is down hill.
Lan Kwai Fong is a nice night life area working girls exist but normal girls also hang out here. Whereas Wanchai is meant for punting.
Shenzhen is good too. Save your massages for Shenzhen.
using the internet for 141 or high class escorts i think is a hassle since you don't know the locations. In wanchai you can look around have a drink go bar hopping and meet other people.
Overall HK is punters market there is plenty to choose from.