Oh no, not youtube videos. Stop! Most of those guys are "weekend warriors" and spend more time making videos then really doing it. Keep in mind that they need "clicks" to make money and so they have to go over the top to get viewers to watch. If you keep watching those videos they'll have you convinced that you must have 37 inch or bigger tires with big lift kits and expensive shocks and on and on and on they go. Sure it would be nice to have their bank accounts but if I did I sure would spend my money better! Most true overlanders do very little to suspensions and only go up a size or two in tires. I've been overlanding for over 50 years, long before they invented that name, I've done the big builds and spent uncounted thousands of dollars building "ultimate" trail rigs. I've come to realize that almost all of that money was wasted!!! Remember the "kiss" principle, "keep it simple stupid"! Most modern trucks can do amazing things right off the showroom floor so spend less on the toys and more getting out there and doing it. Over time you'll find out the things that YOU need for your style of travel.
As for larger tires. Go for one of the "hockey puck" 2 inch lift for the front. That should get you 35 inch tires that will only rub at max deflection. You might need a 1 inch block for the rear but all my trucks have been just fine with the small front lift.
Stick with the factory shocks until they need replacing, by then you'll know if you really need the expensive ones for your traveling style.
Add a good quality air compressor and small tank. You'll use that a lot when airing back up at the end of a trail. This is where you'll get the most bang for your bucks.
I've had rock sliders on my current truck for years and still have yet to hit them on anything and that's with thousands of off road miles. They're nice for piece of mind but unless you plan on getting really crazy on the trails you'll likely never use them.
A 12000 pound winch is likely the biggest you'll ever need. I have a 9,500 on my truck and have only used a couple times to pull others out. Find a local club or place where you can learn about how to properly use a winch and you'll find that the 12000 will cover everything you could likely encounter. You'd be surprised to learn how many never have one and get along just fine. Get the smaller winch and spend the extra money on a good sturdy front bumper. That will save you a lot of money in damages from the animals you're going to hit in your travels. No kidding.
Can't help you with the rack since you don't say how you intend to use it. But the aftermarket is full of them. If you live in or near a large city you can probably find a shop to build one just how you want it.
Take it from one of the suckers that bought into all the toys as "must haves" for off roading and overlanding. Don't do it!! Start by just going and doing and you'll find over time what you need.
Hope this helps! Happy Trails!
