Welcome to the forum and the Overlanding world!
My advice — use your Ram, and put some miles on. With a modest investment, the Ram can be a great off roader that will take you to 95% of the interesting and remote places in North America. When shopping for a rig, it’s usually best to buy/build for the expedition/type of trip. There is no “do it all” rig — every platform is a compromise of some kind. Until you know what type of trips you will do, it’s hard to know what compromises you can live with and which ones you can’t.
Putting miles on adventuring with your family will really help you narrow down the kinds of trips you want to take, and that will result in a better vehicle purchase — which you may find you don’t need to do, as again, your Ram is a great platform. It should have 4x4 with a two speed transfer case, so mechanically its very capable. Its got amazing payload for an Overlander, which is important. Depending on how you live on the road, you can equip a rig with a lot of stuff — water heaters, slide out kitchens, roof tents, etc. — and that stuff‘s weight adds up. A high payload rig like your truck can easily carry lots, so you have options. Maybe you want a trailer or a slide in camper? Both are options with your Ram.
Once you do a few trips the compromise of your rig might rear it’s head, though. There’s a chance it never is an issue depending on your style if adventure. The main compromises for your rig are size —the departure angle and break over angles specifically. It’s also marginally wider than some other rigs, but that is rarely a problem in this scale; the couple of inches you’d gain with a different rig might mean more scratches for you, but will rarely mean you can’t progress down a track. If you do find these compromises to be too much for where you want to go, a modest amount of money will get you aftermarket bumpers that will dramatically improve your approach angle, and a few dollars more opens a lot of options for bigger tires and a modest lift, which will alleviate that compromise a lot.
Overlanding can be cheap and on a budget, or it can be a millionaires hobby, and anything in between. I would spend a bit of money on recovery gear (Maxtrax, a shovel, a Jack, and the fixings), a bit on some emergency communication devices (InReach or Spot, or even an eBay Iridium sat phone) and then a lot on gas and go see the world around you. You’ll soon find out what rig will work for the places you want to go to.