I did my 904 first too - the 833 is far simpler, just because it's like having no valve body to deal with, and fewer rings/seals.
Similar, yes. Gotta make sure it seats back in after the new bearing is in. My buddy bought a 'brand new' 833, and it had weird issues. Turned out that ring wasn't seated, and on the 2nd gear shift it would shove the whole gearset rearward and grind on things. Took us a few hours of polishing the ring on a piece of glass with 600 grit until we got it seated with no play.
