5.13s..... Like moab said, that is deep for your road trips. I dont know if you watch the UA trips, but Chris Durham (i think two years ago) drove his v8 equipped Willys TJ from NC to Wash state. He swapped in 4.10 for the road and swapped back to wheel. That would not be an option for most people but it does give you/me something to thing about.
The CJ that I have been thinking about building for way to long will be a long hauler/wheeler-(drive there and back/no trailer). I plan on a d60/14b with 4.56 (cucv style) with a 5:1 tcase or doubler tcase. I know that is more than you are thinking about now, but it is another way to go about good offroad gearing while saving a bit of the gas gussling. Just my 1.5 cents.
87 MJ Chief in pieces
Bought/Wheeled/Sold: 85 CJ, 79 FSJ, 05 LJ, 06 WK