You are correct Drew that exit 440 works too. I suggeted 435 only because there is a Walmart there that you can stop at for groceries and such if needed before giong on to the campground.
Point of interest on the way is Carver's Orchard. They have a great farmers market through the season and they have a good home cookin' restaurant there for a good lunch. Worth stopping in but DO NOT tow your trailer or take a motorhome up there. The parking lot is tight and no room to manuver a long rig. Go back there after you get settled into your camp site.