I changed out all of those parts you mentioned on my 96 gtx. If cost is not a big deterrent do it, not really all that expensive either. I also did plugs, spark wires, boots, gas gauge, rectifier/regulator.....but I did it only because my ski went scuba diving without me.Just based on looking at these parts that is.
Best practice is to keep and or replace with OEM if at all possible. The OEM starter can be rebuilt pretty inexpensively with a new brush kit (since you already have it out. I’ve fixed pulled wires out of connectors worse that that....certainly doable with patience and moxy!Also, I think my regulator is tied into the MPEM but the part isn't that expensive might as well do an overhaul. That's what I read in the manual anyways.