As someone who owns both an LJ and TJ (automatics), keep the LJ. I swap back and fourth between daily driving both and as much as I love driving the TJ, the LJ is just more useful. Especially if the wife will be using it to run errands. With the back seat folded up or removed, there is considerable usable space available.Sounds like my wife is a little different than your wife, she gave me the green light on a new gladiator after she test drove one. We priced out what we would want and both said no way, could not justify the price. That’s what got me thinking about a good condition TJ with an automatic, that and the obscene prices I have been seeing LJ’s selling for. She doesn’t really need a daily just something to get to the store a couple of times a week. As much as I like a manual I could live with an automatic as our daily driver with a beater for me to use if she should want to go somewhere.
Since you have a nice low miles LJ, have you considered finding someone that will do an automatic conversion? There are people here who have either done the conversion themselves or taken it to someone that did it for them. The most economical way to do this though is to find someone with an automatic that wants to swap to a manual. Those folks are out there, but you'd need to post a wanted thread to see what interest you'd get.