I wouldn't separate the case. Its heavy, but its all bad enough cracking the bellhousing bolts - to add the t-case to the list when it will come along voluntarily with the trans is adding extra work, IMHO.

I did the clutch on BII in my old garage with minimum tools/know-how, by myself. Didn't pull the tcase, and it was manageable, with a tranny jack.

Did you come up with a clutch alignment tool? After cracking the bellhousing bolts, getting the assembly to mate up was the hardest part, when I did it.

1991 HZJ77, 1999 KZJ90, 1999 UZJ100, 1992 M101CDN2
https://www.thegearheadproject.com/category/jdm-journeys/