Thanks for posting these videos so that future folks with this problem can be helped in a similar predicament. That said, I have some comments to make:
1) There was no need, or benefit, to putting the PTO handle in gear first. That step only applies to the 3000 style "live PTO". You have the 4000 style "independent PTO". That thrust washer, which you thought was a shift collar, would have fallen down regardless of what you did with the handle. The IT manual is less than clear on that I'm sure.
2) I noticed that you credited the grease on the broomstick trick to what you learned on a tractor forum, obviously here at YT. I give original credit for that idea to Rick B, who I learned that from many moons ago here on this same forum.
3) I liked your wrench idea on removing the bearing. Obviously a slide hammer would have worked better, but you made do with what you had just fine.
4) Suggest getting yourself a good set of punches and chisels for future removal of seals and installation of bearings. Beating on PVC pipe just isn't nearly as effective. Yes, it worked, but that was pretty "back woods"!
5) It would appear that you re-used the old bearing retainer gasket. I would have replaced it myself - hopefully it is not leaking.
Otherwise, good job!