How about waiting until you hit another plateau in gains from your regular training/diet regimen?
Fuck all this hurrying to get back on a cycle. You should start juicing when you see diminishing returns with your diet/training...after making whatever adjustments you can to break through the sticking point naturally. After all else fails, then juice.
Same goes for the second cycle...after you come off the first one, keep as much as you can by lifting with high intensity and low reps...then when your blood work comes back to the pre-cycle values, you should start trying to make gains naturally again until you come upon another plateau in gains.
Same goes for the third, forth, fifth, nth cycles.
DON'T DEPEND ON THE JUICE TO MAKE GAINS!!!