Unless you happen just drive out.I was always pretty happy with the performance of the stock .gov blm and FS rigs I drove around back in the day...
Lockers just get you stuck farther from home
...or deep mud or sand or big rocks...The only situation where you really NEED large tires is in deep deep snow.
But fun once you learn how to use them properly.Automatic lockers have a learning curve. I wouldn't suggest letting just anyone drive the vehicle in adverse conditions.