The WA sales tax is approx 8% (8.3, I think), not 10%. Property prices in the metro west side are high, just like any large metro area. Live out in the country and its much more reasonable.
There is (currently) no income tax.
With the exception of aligators and other tropical type animals, if its huntable in the US (outside of Alaska), you can probably find it in WA. Got mountains, and deserts, deep sea fishing and snowboarding. Whitewater and hiking. Other than bayou warmth, if you can do it in the outdoors, you can do it somewhere in WA.
All else being equal (and it almost never is) bigger bullets tend to work better.