I've been there many times. Keep in mind, it is still Pacific Northwest which means lots of rain, cloud and depressing days in a year. However it is beautiful during the few weeks of sunny summer days, lots of outdoor activities. They have some of the highest population of Asian, so the choice of food is absolutely great. The area of Richmond is a food heaven, much better than any of the west coast, even better than the bay area.
However it is expensive. Here is a simple comparison. I could get the motel room in the US for $60 a night; the same room cost me $180 canadian dollar. Food cost a lot as i noticed during my trips, so it was obvious. Keep in mind the exchange rate is almost equal.
Living in the city (as they call it "Van") will be expensive, but Surrey, West Minister and Richmond should be fairly affordable (just my guess). Public transporation is pretty good.
With a engineering job and your spouse working, you guys should be fine.
Be sure to visit Whistler Moutain and Banff National Park. Good Luck