one more thing , as an additional info

make sure that all your documents are attested and ratified by ministry of foreign affairs ,New delhi.

Educational certificates
marriage certificates
birth certificate for your baby etc

here the formalities are a bit more compared to other countries.

Your Resident ppermit may take around three weeks from the date you land here. Your wife's visa as well as your kid's visa should be in your name so after that only you can process theirs. So you should be extra careful in your documentation. There are other ways to bring your wife and kids faster. But it will be added expenses.