I did it and a hybrid of P90X, P90X+ and Insanity for about 18 months.
Then I took some time off.
I've just restarted again about 3 weeks ago.
(I'm the 47 year old guy with two bad knees and asthma - and under this workout I run circles and lift more than 90% of the kids around me 20 years younger).
It's great for anything. General fitness, etc. I would say that it's a bit intense for most. and also too hard for most people I see around. But one can build up to it. I wouldn't change anything about it for golf. Maybe one thing, it's VERY shoulder and core intensive, so be aware of your shoulders and how they feel during the workout and during rounds. Also, the Back workouts don't really address the lower/lumbar area much - I'd augment with sets of romainian deadlifts or the like.
But if all you are doing is the lifting workouts and avoiding the others (Cardio, Plyo and Yoga) - then you are seriously missing hte point of it.
That said, those are great lifting workouts. So if that's what you want - it's great. But at this point, it's not the program. It's just supersetting three days a week and hitting each body area once a week. You don't need the vids for lifting - just the techniques and the workout logs. I get those done in half the time because I don't listen to the creepy man.
If I had to pick with your schedule - I'd do half of each of those and add some form of cardio each of those days. Yoga often if you can, and do abs while watching TV as a bonus. That specific Yoga workout is the keystone, IMO.