wow. ive never seen so much wrong in one post.
Youll do fine, its mainly momentum unless you're in conditions that demand 4x4. I've gone everywhere but snow and deep mud with 2wd no issues.
Some people just wont take their heads out of the sand to realize the sun still shines.
Momentum is also a great way to break things. Especially wheeling here out east where the OP lives and you're dealing with trees everywhere. Get too much momentum on a slippery wet clay trail (which there's a lot of those out here) and you could slide yourself into a tree, rock, or both. Where he lives in coastal South Carolina, Most of the trails he'll be dealing with will be sandy or mucky coastal plain soil. You can bury yourself up to your frame rails really fast if you're not careful. Then if he heads a few hours inland to the mountains of western NC & SC & North GA he'll be dealing with lots of clay soil (which is like ice skating when it's wet), steep hills, and water crossings. He'll be able to navigate the maintained FS just fine. Which is fun if you're just looking for a nice scenic drive or searching for a campsite to camp.
Also, I've seen a lot of 2wd trucks "making it through" but they're definitely not treading lightly. Getting a running start, spinning your rear tires, fishtailing, and rutting up a trail the whole way through is not treading lightly by any means. Teenage Shenanigans like that is the reason the FS is closing a lot of the National forests and WMA's to ORV traffic.
Also like others said, never go wheeling alone. Even if you have a 4x4 I wouldn't go alone unless you're very familiar with the trail and have a decent means of communication. You never know what could happen, especially out in a remote area. Recently, my buddies, myself, and my wife were exploring around on some FS roads. Me and my wife were in my Tundra and the other two were in my buddy's FJ40. We decided to head back to the main road because it was starting to get dark. I got a few switchbacks ahead of him and couldn't see him in my rear view anymore. Once I got to the main road, I waited for him for about 15 minutes or so and he never showed up. It was really starting to get dark at that point. Our cell service sucked out there so we had no means of communication. I turned around and went back to find him. He was broken down in the middle of the road. He hit a dip too hard which knocked his battery loose from the tray and ended up yanking a wire out of his distributor. I had to tow him all the way back to the main road with my tow strap, then rent a uhaul trailer and tow the FJ40 back home. Once we got back home and started tinkering with it, we finally found the wire that had come loose. Boom, started right back up.
I don't mean to discourage you, just saying if you're serious about doing more off-roading than just tooling around on FS roads, then I would buy a 4x4.