Here's my $. 02, do with it what you will.
"Overlanding" basically consists of three basic parts, as I see it.
1. Travel
2. Accommodations
3. Self reliance
Let's tackle travel first. This can be anything you want. It can consist of paved roads, gravel and dirt roads, or technical trails, and any combination in between.
How you set up the vehicle, and what mods you want to make should primarily be determined by this factor. A stock vehicle will handle the vast majority of travel requirements with little to no modifications. Figure out where you want to go, and what trails you want to do, and modify accordingly.
Keep in mind that as you're starting out, you don't know how the vehicle handles, and what it's real capabilities are. As such, if traveling alone, you're probably not going to be tackling the rubicon. Keep it easy starting out, and push it a little bit further as you get more confident in yourself and the vehicle.
Now let's talk accommodations. This means what are you eating and where are you sleeping. This could range from a hammock, to the Hilton.
In your case, you mention camping. I say if you have all the camping gear you need, just use that. While it may not be ideal, as you begin doing this more, you may (and will) find that you want to make changes to some of your gear. At that point, once you have an idea of what's working, and what's not, you can start making changes to your setup.
For example, I found that much of my camping gear worked well for stationary camping, it's either too bulky or inconvenient to use when moving every day. Also the way I was storing and organizing my gear took way to long to load and unload from the rig. I've made some changes that I think will streamline this process, but I haven't tested that yet.
Last is self reliance. This means not needed to rely on someone else during your trip. This means making sure your vehicle is prepared for the trip you have planned. You have enough food, water and supplies to last until you can resupply. This means that you are as prepared for any situation you think you'll come across as you can be.
What I'm getting at with this is basically the following...
I always tell people use your vehicle how it first, and make no performance modifications to it for a while. Don't make any modifications to it until you have to.
Take my vehicle for example. I drive what is, performance wise, a bone stock 2003 Nissan Xterra. Yes it has a rear tire carrier. Yes it has a drawer system. Yes, it has sliders.
I have no skid plates, no lift, no winch. I have tackled some very difficult trails in essentially a stock vehicle. I've been driving this vehicle for about 18 months now, and I feel like I'm just now starting to understand it's limitations. However, when tackling these tough trails, I'm not alone.
I'm just now getting to a point where I feel comfortable enough to start venturing out on my own, and even then, I'm planning on sticking to relatively easy roads.
Anyways, I feel like I've rambled on enough for now. I hope this helps some.