Can you post up a picture of your truck? It might help with suggestions. It’s hard to give advice on good wheels when we don’t have a reference to what would look good.
Awesome rig btw, and I don't think I'd be able to get away with 12.5's without rubbing.
A picture won't help, I mean it's torn in pieces really.it depends. What do you want it to do? What do you want it to look like? Do you have a picture of the rig for us to help a little better?
If you want a stock look but with wide tires, you can get OEM rims and widen them, and put hubcaps on.