Hi, when you speak with your agent, tell them EXACTLY what you want, ie. price range, location, busses, MRT etc. The agent can then tell you what is available. $4k will probably get you a 3 or 3+1 bedroom apt. outside the CBD along the MRT route. Be mindful of the noise level near the train/bus/highway lines when you are looking around.
Walking in Singapore is an art...you either like it (humidity, distance, crowd) or after a while you'll say stuff this and get a car. If you can stretch the budget a little, lease a car for a year and then decide what you want to continue to spend on. Keep an eye on the family expenses too. Do a search in the forums about cost of living. Moving to a new city with a young family and baby on the way isn't the easiest of times (been there, done that

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