Durban Poison is a good 16 week strain. Not an early finisher... And now everything you say is suspect because you obviously don't know wtf you're talking about.
I live in Oregon also. Been here for about 6 months. I'm also going to be doing a Guerrilla grow this summer and will share my insight with you.
I'm in Northern Oregon, but basically the state is split into a few areas west to east. First there is the coast, then the Coastal Range, then the Inland Valley, then the high desert.
In the west you're going to have more stable temperatures and slightly higher humidity. The ocean side of the coastal range will need to deal with quite a bit of early morning fog. The Valley side is a better choice because it will get lower amounts of rain fall and fog.
In the (Willamette) Valley you have a great number of vineyards and flower farms, and for good reason. This is a good place to grow flowering crops. The mountains around this valley have been channeling nutrients from the fisheries (spawned salmon) into this valley for centuries. The soil is rich and healthy with good amount of humates, silts, clay, sand, and minerals from local volcanics.
Personally though I think the best place in Oregon to grow is going to be just as you enter the high desert country. Somewhere around 3,500 to 5,500 feet elevation, just east of Mount Hood or Crater Lake. Take a look at a map and pay attention to the colors in the middle of the state. The narrow band of green, just on the edge of that high country brown, is an absolutely perfect place to grow. The further south you go the better. Somewhere around Klamath Falls or Bend, off of highway 97, would be a good place to start looking. Personally, I'll be sticking more north end off of Highways 26 and 216.
Aim for a southern face. During the summer time we get an ass load of sunlight (up to 20 hours a day at the solstice) and after the equinox the light drops off considerably. Right now I think we get like 9 hours of light per day. Try to find a spot that you can return to easily (gps is good for this) and that has access to plenty of fresh water. I'm going for the natural style grow so I'll be planting near a stream so the plant can dig down into the water table instead of needing constant watering.
Start your plants indoors during the early months. I'd say begin them in March and then watch the weather through April and May. With the La Nina this year there is going to be a pretty significant snow pack, so by the time everything is melted off and the rains have subsided it could be as late as June when you transplant outdoors. Having started your plants indoors (and then moving them to the location) will allow for the largest plants that you'll be able to get up here in Oregon.
Do some research, get yourself a Guerrilla growing book. The information it contains is worth the $12.99 you'll spend on it and can provide you with the details you need to do this successfully.
