Dump the big wheels and replace with big rubber. There really is no advantage to the big metal...
17" or 18", and 33" ATs will fit without a lift...ride better...and take you anywhere.
I'm not sure if the 17" wheels will fit the 2016s due to the bigger rotors. I would like to keep the highway capabilities as it is, just make it better overall mainly the in snow and the sand. That's why I would prefer the 20s over the 18s. With the 21s there are no options other than the current dunlops which have a threadwear of 360.