George Washington National Forest in West Virginia might be a spot to look into. Although, it's been many years since I was there....some of the trails might be closed. Not sure...
We used to meet up with folks in Harrisonburg VA and travel west into West Virginia on Rte 33 into Brandywine and the trails aren't far from there.
Check out this website. http://4x4icon.com/
Each time we went there, he would guide for us. He knows that area like the back of his hand. Great guy!
He's got a lot of trail reports you can check out.
GWNF is more of a stocker friendly trail system (that I remember) and not much to challenge you. Really nice scenery and enjoyable ride. Also, you might want to check out the Virginia Chapter of TTORA http://www.ttora-va.com/