Hi,
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If I was in your shoes I would buy both if you could qualify for it. One to live in and one to rent. Timing the market is never easy and I would not advise it. If you have around $180 000 you can put a min.of 20% down for both properties and still have money left over. (or put more into one)
As long as the oil sand keep producing, the oil companies will need people to live there to work.
Good luck!!