Rick, the thing that's breaking my heart is that the Cumberland event is the same weekend as the Cobra Revolution.
We have already reserved our pavillion and are planning other events to do, so I really would have a hard time switching dates. As I mentioned, I know there is an autox on Sunday the 6th. I'm sure there are drag races around, etc... The venue is about 7 hours east of Columbus, right at the PA/NJ border.
There is also a place in Lancaster, Pa which would be perfect for an event. It's right near Carlisle. Huge gathering areas, close to local drag strips, an active autox group, etc.. the landscape is very similar to the London area. It's probably 4-5 hours east of Columbus.
Steve