Sounds line a lot of good ideas but great trail rig and DD are not the same.
You can take a well maintained YJ and some really good wheeling with your current setup. If you add lockers with 33s you will eventually break the stock rear. You will also be looking to do a lot if other mods to make it a great trail rig.
In stock form with your setup I wheeled mine for a year after a lot of work and new parts without an issue and always drive it home never broke anything on the trail. It does some amazing things and goes most anywhere.
I am old and slow and so is the YJ and we get along great. But with the 33s it was to slow to get to the trails and the brakes and steering sucked. So this summer re-gear to 4:88s, Ford 8.8, brake system upgrade and steering upgrade with lockers front and rear. New driveshafts because if the lockers
Lots of money and I still have two good weeks of work to get back on the road.
Wheel what you got see how wild you want to go and then read, read and read some more here. You will find all the info you need to keep it driving and may eventually get what you want out if your YJ.
Most of all go out and enjoy the ride.
89 2.5 TBI, 4" RC lift, 1" Booms, SYE, Adams Driveshafts front and rear, Ford 8.8 with 4:88s, BFG 33X12.50X15, and a ton of other stuff.
AF Jeep Club Tail Number 184