What Jenise and Bucko said.
Clark, be sure to bring along some backup bottles, but still you might be in for surprises. If I had to bet on a winner it would be the 1989, not because it's the youngest but because that was one of Washington State's best Cabernet (and Merlot) years. I don't recall anything or have anything on hand about 1984, while 1985 was considered just average, 1986 a bummer, 1987 above average, and 1988 average. I pass these opinions along for what they are worth and in hope they may be of interest to you and your fellow tasters, but of course it's what's in the glass that counts. I wish I could join you as I think over the hill tastings are generally a lot of fun.