Welcome! Another CA guy here.
I agree with the "shoot it for a while first" group. If you really want to get ready for the CGW/CZC road, I'd recommend doing the polishing job on internals first, so you can smooth your pull and get familiar with the detail strip of your pistol, which you're going to have to do repeatedly to test the function of your upgrades.
If you decide to polish, I'd recommend CGWs floating trigger pin to make your life easier on future disassembles. After that, there's plenty of info on specific parts throughout the forum.
If you don't have it, get a good punch set.