I'd love to give you some advice and help, as this area is literally "in my back yard." But I don't know how to tailor the advice, because I don't know enough about what sorts of things you're looking for. State parks? RV resorts? National forest? Size of your rig? Sorts of activities you're looking to do aside from visiting wineries? Would you like some advice on which wineries to visit and which ones probably aren't worth it? I can offer some opinions on that too, but would like to know what sorts of wines you like.
If you can give some more information I'd be very happy to give some tailored advice and opinions.
-Speak