Setting up a ring and pinion is a very in depth job and isn't for your average joe. It also requires a bunch of special tools. I don't have a problem with you wanting to learn to do it but when you're crunched for time things get rushed and skipped. I would recommend that you take it to a shop if you plan on replacing the carrier. And after the deployment learning the job. If you are just going to do spider gears you can get torque specs online. just Google Dana 30 torque specs.
Let me google that for you
Here are some numbers I found.
Axle Housing Cover -- 20 -- 15-25
Differential Bearing Cap Bolts -- 40 -- 35-50
Drive Gear-to-Case Bolts -- 55 -- 45-65
Lower Ball-Joint Nut -- 80 -- N/A
Pinion Yoke Nut -- 210 -- 200-220
Universal Joint U-Bolts -- 15 -- 13-18
Upper Ball-Joint Nut -- 100 -- N/A
Upper Ball Stud Seat -- 50 -- N/A
Wheel-to-Hub Nuts -- 80 -- 65-90