No flaws in your approach. It's solid. Steve's concern is that if different exercises are different difficulties, the same reps/sets wouldn't work. However, you've clearly given that some thought already and have chosen variations of similar difficulties. I think Steve didn't notice that (he has to read a lot of other threads also!).
Also fyi, I have used the ROP for Pistols, and it was miserable. There's no need to be doing so many weighted Pistols in one day.
I recommend you try Karen's lower volume approach for all three and after the program, assess whether you should move up to something higher volume like ROP. No reason to do more when less accomplished things
Just my 2 cents