How about one of the many Catalina 25's with a pop top? They sail better than their detractors would like to admit. Parts and advice available from many owners' sites and from the factory.
Since you're in the NW, a much higher quality trailerable would be the Ranger 26 (the Ray Richards design built in the late 70's and early 80's by Ranger Boats in Kent WA.
Another nice trailerable design with a great sailing and cruising rep is the Ericson 25 model with the centerboard from the mid-70's.
There are probably many other choices out there, and more owners will be chiming in with 'em.....