Off road you typically want more sidewall, not less. "Low pro" tires allows for a firmer, more connected ride, to the road. That's the opposite of what you want off road. It does not allow for the benefits found when you have a taller sidewall, more flexible as it wraps itself around obstacles, or flattens and provides more floatation.
The wheels are chromed, with many "spokes." They are more easily damaged or broken by obstacles and allow more (smaller rocks for example) to impact (or get caught in) the brake rotors. They appear to be aluminum, which can be good in some instances, but they break rather than bend.
Lift is a way to increase tire size as appropriate for the terrain, but you want as little lift as possible to get the largest tire for the terrain. Ground clearance is measured at the lowest point. Lift does not impact that, tire size does. The GM trucks have small wheel openings so it is difficult to get a larger tire on without a lot of lift, so it is a catch-22. You increase your center of gravity significantly, which can cause excessive sway or roll, for minimal gains in ground clearance.
So, for most off road conditions, that is not the truck or the set up. That's the kind of truck that makes a great tow rig (except for increasing wind resistance with so much height), but not off road. That's my $0.02 based on a fuzzy online pic. If I knew more about the mechanicals, I could probably go on.
