Trailer Brakes

[Moneyshot]

Figured I'd start a new thread on this just to clarify a couple of things.
I've already looked at the sticky item listed above and appreciate the links but I do have some questions.
Im planning to switch from the vault system to bearing buddy, what is the process and do any of the components change other than the caps and lubricant?

I have a leaking rear seal it appears on my hub currently, how difficult is it to swap this out? I'm fairly mechanically inclined but for some reason I get very confused when it comes to bearings just something I can't seem to grasp.

Any help would be appreciated

[Moneyshot]

I will be replacing my rotor due to my caliper hanging up.. I'm just not sure about the wear sleeves o rings and seals etc to make this all function properly

Planning to start with this.. Along with the bearing buddy caps
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