Way too many years have gone by since I did mine to remember anything regarding timeline, etc. Will say that while you have the chunk out of the rear axle housing, you might consider installing a drain plug to make life easier in the future when you want to replace the rear end oil.
Craig
My '50 Chevy 3100 5 window, '62-235cu, 3:55 rear
My truck ....... Respect The Rust
If I'm not working on my truck, '65 m00stang or VW camper, I'm fishing with the wife or smoking Salmon.