AGAINLike I said before, what you may find simple, I don't; not because of the job (I've removed numerous drive shafts over the years) but because it's a KJ, unfamiliar &, in some respects, quite strange.
Certainly won't be selling it, not even for scrap, nor buying anything even newer (perhaps that's my problem: too far out of my comfort zone).
Now, to specifics: made some progress, in that the shaft's no longer seized in the flange on the diff but still can't separate them, mainly for want of room. Logic suggests removing the left down-pipe/cat. (as the FSM says for the 2.5 diesel) &/or the transfer case X-member, but I'm reluctant to do that if it can be avoided.
As for the valve covers, I remember when removing them was part of a routine service (to adjust valve clearances), they've got progressively less access able over the years, but 'til I got a WJ I'd never encountered a vehicle where you couldn't see them. It's the shear amount of dismantling, the time it must take & how long it's going to be stuck immobilised that deters me. What once would have been a challenge, now just seems more trouble than its worth but that's all for the future.
If you set your mind to it, look at each thing before you start , take your time, breath deep and don't get excited, you'll do fine