There is something you need to remember too buddy. There is this thing on cycle that is an enemy to keeping gains coming indefinitely called homeostasis. It is what your body is constantly trying to achieve...on and off cycle.
Even when on 10 times the normal range of hormones, your body is trying to normalize itself. After a while on, your body will see these extra hormones as "the new normal" so it won't build muscle at the same rate as it did when you started the cycle. While this is happening, your androgen receptors are being down regulated as well. It is a double whammy against further gains. Some people fight this by introducing higher dosages or more/different compounds, but it isn't worth it IMO. You are facing diminished returns for more sides and more shutdown. As long as you are 500-1000 or so cals over maintenance, that is all you need. Anything extra will add weight yes, but it will not be the kind you want. This is the reason I like to add size the first half of these long cycles, and use the last half to shred up.
If we could just keep gaining on cycle, we would all be Ronnie Coleman's in a couple years. Even guys that never come off blast and cruise largely because of that reason (as well as health)
Just food for thought and my. 02 bud