There is a Footballguy who owns a vineyard in the area. Not sure if it's open for tastings yet.
That would be me. Our place is in Newberg and had our grand opening Memorial Day and are now open by appointment for tastings:
http://www.bellsupwinery.com. Would love to have you drop by when you're in the area - just give me a shout.
Would agree on hiring a car service - will be much more enjoyable when you're not fighting traffic and I'll be happy to give you some tour company recommendations - just drop me a PM if you're interested in that or in winery/restaurant recommendations. Would agree that McMinnville is a good staging area - bunch of little B&Bs around Newberg and Carlton as well that are great but not sure of their availability in October. As a general rule, the valley has a very laid back tasting environment which (I've been told) differentiates this area from Napa in particular and to a lesser degree Sonoma. You'll get a lot of pinot noir here as it does really well in our (relatively) cool weather climate - those of us that also pour a big red or two in the tasting room usually source the fruit from eastern or southern Oregon or Washington. Lots of good choices for whites as well.
One thing to keep in mind is that early October is usually harvest season so if you want to visit some of the smaller places (which IMO is the fun part of visiting any wine country as you'll get one on one time with the winemakers you won't get any other way), you'll want to call ahead a day or so and make an appointment (or have the tour company do it for you) as us winemakers will be getting pulled in a bunch of different directions at that moment. I've heard some folks get hung up on the idea of making reservations for private tastings - there are a bunch of very small producers in this area and often our zoning/land use restrictions require that we be open to the public on a very limited basis. Plus, at our tiny case production, staffing a tasting room regular hours doesn't make much sense. Often the producer's house is on the same property as the winery - hell, some producers do tastings in their kitchens and ours is in a renovated pole barn about 50 yards from the house. Anyway, I'd be happy to help - just let me know.
Oh and GM, please do visit when you're in the area. I'm literally a 1 minute drive up the hill from the Allison.