Thats a LOT of work! As much as I have most trainees do in two week time. If it is working for you go with it. If not the obvious thing to do is start slowly reducing the amount of work that you are doing until you find the "sweet spot" where gains are consistent. With that much volume strenght gains may be S-L-O-W, but if size continually gets better and you are slowly adding strenght you are on the right track. If strenght rarely or never goes up you are just continually doing the same workout and will continually be the same size.