Man, that thing is clean! Does look funny with the little tires, though. 31x10.50R15 were optional on these, so they should fit without drama. That's what I'm running. Your speedometer will be a little out unless you want to try and track down the right cable drive gear to correct it.
You may need different UCAs if you go past about 2", both for alignment and for ball joint angles. If it's strictly a roadfinder, you may get away with leaving the steering linkage alone, but it's not a strong design to begin with, and lifting them makes the geometry worse. There are a few ways around this.
There's a Jeep spring a lot of people have trimmed and used in the rear (front springs for a V8 Grand Cherokee IIRC). I think there are (or at least were?) a couple of purpose-made options as well. Or you can get spring spacers.
The torsion bars take time to settle, so adjust them a little at a time, drive it back and forth, and see how they settle out. They're easy to overshoot. I about Carolina squatted mine trying to level it. Also make sure the truck is well supported while you're at it, IIRC someone on here (or was it the FB page?) stripped the adjuster and damn near dropped his truck on himself. I adjusted mine with the truck on stands and the wheels off the ground because ain't nobody got time for that.