We were in Lexington for a conference a few years ago, but it was before we bought the B so we roughed it at a hotel. Since it was a work trip we didn't get to tour much, but we did spend one afternoon just driving around the countryside. It's very beautiful. Look for the tobacco barns along the road and stop to smell the drying tobacco - it really smells good (and I'm not a smoker)
I will be in Sweetwater TN the last weekend in April, so we'll be just south of you. Not sure yet if Chino is coming or not.
A good traveler has no fixed plans, and is not intent on arriving. ~ Lao Tzu