More work on the transmission tonight.
With a punch, I was able to tap out the bearing. The punch was pushing on the inner race of the bearing. Thankfully, no puller was needed. Its a very light press fit. To get the new bearing in I used a socket and a mallet to press it in. I also did the seal while I was at it. The old bearing didn't seem horrible once I got it out, but it definitely was making noise. There wasn't a ton of excessive play in it though. Also, all the gearing looked fine.
Here is the magnet in the bottom of the transmission. Its got a bit of gunk on it. Before and after pics shared for comparison.
After that its just a bunch of bolts and it was back together. For those who are timid about this part of the work, its really rather easy.