Cameronrs5,
Where do you live? More importantly where will you do most of your off roading? How deep are your pockets? Do you have winter/snow?
If you're serious about off roading you need to think about all of these factors. Forged wheels are usually stronger and lighter. In most conditions a fatter tire gives better traction. Larger sidewalls allow better flotation when airing down(...a 35 x 17 will give a bigger footprint than a 35x 20...). In snow you may want a narrower tire unless you are doing deep snow when again a fat tire helps you float.
If you deal with snow more than occasionally you will want a tire with lots of siping, and 3 mountain/snowflake designation for best traction in moderate conditions.
Does road noise bother you? Can you afford new tires every 20,000 miles? Or do they need to last 50,000 or more? I'm currently on my second set of tires at 104,000 miles. I have **** Cepek Fun Country tires at present,but found them to be only so-so in the snow so will be trying Falken WildPeak AT3W's next..(my son swears by them).
There are hundreds of options. Research, think; and DO WHAT YOU WANT! It's YOUR truck...Make it what YOU want it to be.
Most importantly take it off road as often as you can!
Eddie