I agree with Floridaman. Spot on with the drain and fill on the transfer case. The tag is metal so it will be there
The t case can roll to 64000 miles even under the severe service spec so it's good. I did mine at about 38000 but that's due to the sponsorship with Amsoil. It was clean coming out. 2 quart is all you need with the Select-Trac 2 case. Other cases are slightly less.
With the diff, my advice is to do it before the 64 k if you have ELSD. The clutches really dirty up the oil. For the cost of the oil and an hour of your time it's a no brainer. Not sure why your dealer is using 140 oil. That is not correct for the GC. Stick to the 75-85.
22 lb-ft is sufficient for all the drain and fill plugs.