I don't see any reason to go to Washington. And I don't understand why you think Oregon has become more restricted. Dispensaries vary but some carry quite a variety of flowers. I mainly use 2 dispensaries that have enough variety (about 20-30 strains) but less than some others and are very high quality. I also live in Portland itself so that within a mile of where I live there are 10 or more dispensaries. I know nothing about concentrates but when I look at menus on leafly most places seem to carry a range of concentrates. Some have more concentrates than flowers. You can also buy up to an ounce a day if you are a rec user. It used to be only a few grams max a day. And if you're going to wander around in the country you might want to grab a chocolate bar. I got one at the dispensary that was delicious and the effect was fairly mild and lasted for hours. There were others for sale that were more potent.