Point Reyes Vineyards, the county’s only combined tasting room, winery and vineyard that last year celebrated its 30th anniversary, is for sale for $7 million. “My ideal buyer is a rich, young Silicon Valley entrepreneur with an ego that would like to have his own winery,” owner Steve Doughty said. “I will really miss it, but I’m an idea man, and then I like to have someone else take it over.” The price reflects not…