MK, sounds like ten years of great hunting is in your future, congrats. Ten hunters on 400 acres is fine as long as all ten arn't hunting at the same time. You might get away with it if your all bow hunting but ten gun hunters can be a squeeze on that size property. If the terain is thick and hilly you may be OK?
I live in DE but hunt at least twice a year in harrison county, WV. What county is your camp in?