Is a 5th Wheel Possible for me?

You'll probably be over some of your ratings with that setup, depending on what sort of hitch you use and how you load the truck. Rams unfortunately tend to run towards the lighter end of the half ton spectrum. That being said, your truck slightly overloaded with a fifth wheel would likely tow better and safer than your truck slightly underloaded with a TT. Just because of how fifth wheels inherently tow better. Only you can decide what to do.

One thing you might consider is that your truck is probably worth quite a bit. Used truck values are high right now. You could probably sell it and buy a heavier truck without taking a total bath on it, and that would really open up your options and give you a much more pleasant towing experience.