I did my first 727 in 2016. I disassembled every component and rebuilt it using a variety of components from TSR, A&A, and Coan. I did buy a slide hammer, but do not remember how I managed to work around the other items listed. I tend to get creative when needed. Long story short, I drove the car for the first time on a Saturday night to work, got off Sunday morning, and went straight to the track. I made two time runs, and went three rounds. Trans is still in the car today with zero issues other than checking the band adjustment. There is no need to overthink this.