What Virginia asks of a build
A vehicle built for Virginia works between sea level and about 5,500 feet, so altitude is not the design driver. Mud, water and tire choice are. The forest roads that reach the good country drain badly, and the Forest Service says Helene alone hit 900 miles of them, which is a fair description of what a wet year does to gravel.
Tell a builder two numbers before anything else: your height and your width. Marys Rock Tunnel on Skyline Drive clears 12 feet 8 inches, the Colonial Parkway tunnel clears 10 feet 4 inches in one lane, and a permitted beach vehicle at Chincoteague may not exceed 26 feet long or eight feet wide. Those limits shape a build here more than any suspension question.