Well I can help you out here. From what I've heard and read Blueberry does really well outside in the NW. But if your serious do some research about outdoor breeds for the NW climate and go nuts.
Height won't be a problem because there are ways of keeping the height down while making the plant spread out more and become thicker, like a bush.
its called Low Stress Training
http://www.planetskunk.com/cannabis2335-0-asc-0.html
Your plant needs at least 6 hours a day to be healthy, if you can't grow them without your neighbors finding out because of space, it definately isn't worth doing it outside in plain sight because of the strict laws, plus up here in the NW theres a program that will give your neighbors a reason to report the grow to the police. The callers get up to 5000 dollars!
You could think about maybe making a cheap greenhouse though! that would mask the smell, the site, and also your free to grow some other things in the greenhouse too. such as pineapples! haha or pomegranates or lemons.