Gonna go with most here and tell you that 50lbs is total bullshit. Maybe 5 lbs. If your eating your balls off. Specially being natural.
I trained a similar style awhile ago. Only thing I would say is take special care of yourself. Make sure you are getting enough calories and using proper restoration techniques. I responded well to this type of program but after a few weeks my joints etc started getting banged up. Pushing it as hard as you can every week can be rough on your body. I'm not sure if they advocate any type of downtime or deloading but I would recommend. Even despite you experience training. Sometimes for guys that have been in the game a long time doing less and resting more does more than being in the gym everyday and wearing your back side out.
Just my
