I was thinking this was going to be a "glad I installed my snorkel" thread when I saw the title. I'm surprised to see you even mention the possibility of reselling it considering you sold it once and were so happy to get it back, but its such a well prepped rig that it would be a shame to restart with anything less.
There's another option that will drop the final ratio in high range 10% and it will drop low range to either 2.7 or 3.3 ,so that a 4.88 can be run for now and combined with the t-case gears would reduce it to 5.37, and if you did ever sell it you could simply swap back a stock t-case to get the top end back without the trailer, something to think about...