I have a couple of observations that may help you out. First, despite the purported long half-life of the 4AD Cyp due to the Cypionate ester, it seems to clear the body much faster or at least stop exerting a noticeable anabolic/androgenic effect quite quickly (3days). I would inject at least 3x per week. Additionally, I find that 1500-1800mg a wk is optimal.
Now obviously there are alot of things that we cannot yet explain with regard to injectible prohormones, as this is a relatively new endeavor, and that leaves us with speculation. In the event that the long half life of both the 4AD cyp and 1Test cyp remain in your system in significant enough quantities to suppress natural test but not enough to maintain anabolism, my solution is to use a transdermal product for the last 2wks of your cycle, following your last shot, similar to using prop at the end of a cycle. A better alternative would be to use a 4AD Prop or 1Test Prop product but I only know of one guy who will be selling that and he does not have it ready for sale yet.
Finally, I would run that stack for no less than 8wks, injecting for 6wks.
These are personal observations from myself and several close friends.
To all my bros who I haven't spoken to in almost a year... SO THIS IS WHERE YOU BASTARDS HAVE BEEN HIDING. See you around!