Geek Alert!
I can't explain why I would do something like this, but...
I started by building a HP & TQ curve based on a standard gas engine that I modified to match the factory 22RE ratings.
I then calculated the MPH in each gear throughout the RPM range and determined the optimal shift points based on available torque at equal speeds.
I did this for both configurations that have been discussed.
I used a trendline for the torque curve to calculate the torque at various speeds using the optimal transmission gears for comparison.
If you have to ask, then I probabaly can't explain it.
Draw your own conclusions, but it looks to me like the 4.10 gears with the transfer case in low range is a great option. Similar speeds can be achieved and the torque curve is better.