re: The Greyskull Methods- A Primer

So I’ve been religiously doing the total work method for push ups and it’s going great. My two or three GSLP strength workouts per week don’t seem to be impacted in a negative way by the bodyweight work. Pushups feel easier and getting more solid in upper body. I primarily try to do frequency method , I’m at 5 sets of 10 currently , on busy days if I only got three frequency sets in then I do a ladder at night to get quota of reps in. I do them Monday-Friday and take weekend off so currently at 250 push-ups weekly. Question is how high up should I progress before transitioning to maybe weighted vest pushups or incline pushups “ ala” his bodyweight progression article? Do I go up to 500 a week, sets of 15-20 daily?? What’s a good plan of progression based on where I am now?