Some of those replacement intervals strike me a being excessively aggressive (not that that's a bad thing per se, but I feel is just a bit early and/or unnecessary);
Replacing the hammer and firing pin springs at 5K rounds I think is way early in their viable lifespan; when I spoke with a BUSA tech rep he literally couldn't recall hearing of or seeing a failed firing pin spring; while I did replace mine at the approxinately 12K round interval level, it was more because I had a Wilson chrome silicon replacement one on hand that I wanted to try, as opposed to any perceived actual need.
I have no idea what the viable lifespan of the hammer/main spring is, but I strongly suspect that it's WAY longer than 5K rounds; I used my OEM 16 lb one (I have a 92D, the 16 lb/D spring is the OEM one for that model) for at least a decade and approximately 6K-8K rounds with absolutely zero issues, replaced it initially with a Wilson Combat chrome silicon 14 lb one in conjunction with installation of the Wilson Combat triggerbar, and after a year or so went to a Wilson Combat chrome silicon 13 lb one. Wilson Combat chrome silicon springs are advertised as "lifetime" springs, so we'll see.
Interestingly, the BUSA recommendation doesn't address the extractor spring replacement interval; while I never had any issues with my OEM one, I replaced it at about the 10K-11K round count, as I had a Wilson Combat chrome silicon one on hand that I wanted to try (I actually had both the standard-weight one and their increased weight one; I went with the standard weight and have been pleased with it). Since you're "already in there" if you're performing an annual extractor and extractor chamber cleaning protocol, it's again probably a best practice to simply concurrently replace the extractor spring as dirt-cheap preventive maintenance. I recommend the Wilson Combat chrome silicon ones, although the OEM Beretta ones are probably perfectly adequate.
I replaced my Gen 2 locking block with the current Beretta Gen 3 one at the 12K round count interval, as what I felt was prudent preventive maintenance.
Best, Jon