Are you sure you want to come to Hong Kong? India is doing amazing right now and it'll only get better. I'm originally from there and now working in HK. I came here with my parents long time back. My friends have all graduated from either UK or USA but are working in India are getting similar amount of salary as I am in HK ( with the exchange rate) and as their expenses are very low, they have much more spending/ saving power. They are out partying every other night and still end up saving for a Europe trip and a HK trip every year. I'm single and when I had 4 yrs exp, I was earning avg HK$ 21,000 a month and my friends in India with same exp earn around an average of HK$ 17,000. But lets compare:
I pay: HK$8000 for a 400 sq feet apartment. They Pay HK$ 5000 (for a 1500 sq feet apartment with a full time watchman, car park, and you cant hear your drunk neighbours at it at 3 in the morning).
I pay: HK$ 4000 (hate cooking for myself). They Pay HK$ 1500 (eat at home a lot and food cheaper outside).
I pay HK$ 500 (take the bus or minibus, wait in line every morning and evening and somedays I have the added frustration of finding out there is no money left in my octopus card after I get into the minibus). They Pay HK$ 1500 (but have their own car, parking is free or very cheap, traffic is a pain though).
I pay HK$ 400 per month (no trainer). They Pay HK$ 600 (with personal trainer).
I pay HK$ 500 (all good channels). They Pay HK$ 200 (all good channels plus the shitty ones as well.. for Sundays).
I pay HK$ 500 for my blackberry. They pay HK$ 200 for same.
I have to shell out (happily) around HK$ 12,000 a year for 2 trips to India to meet my family who have shifted there and friends. They spend same amount so they can get away from their parents and go visit different countries.
See, there are a lot of expenses here and sometimes its hard to justify leaving your friends and family to go to another country to work your ass off and come home and sleep. I'm not saying you cant enjoy in HK, but for the first few months its hard and your company will expect miracles from you.
Think hard and long, even if your getting HK$ 30-40 K a month. With a growing kid, the expenses only increase. But if you do decide to come, message me and I'll help you out as much as i can here.