1. Gearing is commonly 4.10 and 4.56. Check first though. Some had 3.73. IMO go 4.56 if you have a choice.
2. One ton axles will be overkill for 34" tires and the clearance under the differentials will suck. Your factory Jeep axles will handle 34's. One tons are really only necessary for 37" and up (this is not meant to be an arguing point...I know that you can run larger tires on smaller axles depending on how you drive)
3. Lockers are common aftermarket items for one tons. The CUCV (Chevy Army pickup) already has a Detroit in the rear 14 bolt.
4. Uninformed...the Chevy front ends are made for a passenger drop
transfer case. Your Wrangler has a driver side drop. You will have to swap to a passenger drop case. This will mean buying a case and adapter or new transmission with the right case and adapter to the engine or just putting all Chevy stuff in the drivetrain. Very expensive.
You can buy Ford one tons from an older F350 that will have a driver side drop that to work with your
transfer case.
I assume you know that there will be issues making your steering work with the new axles. You will also have to upgrade your master cylinder for the larger brakes to properly work. There are a lot of samller things to do as well.