i'm a strong opposer to the short cycles for a number of reasons:
1) the longer you can maintain your increased mass the greater the likelihood that that muscle will stay. with a short cycle, your body has little time to adapt to the extra mass and so naturally will revert back to where you were before the cycle.
2) even with the fasting acting esters like enanthate, prop, fina, etc, etc, etc,..... i find that 2-4 weeks is the minimal amount of time before seeing results.
now, many have reported awesome gains with short cycles and as all bodies are different, what works for one may not for for another.
personally, wouldn't try them.
in fact, anything less than 10 weeks IMO is a waste.
from personal experience, my body really starts to kick into power mode at week 6 and really doesn't decelarte at all (not even at week 10 . i would continue doing them for 12 weeks accept that my logic and rationale avoid me from doing so.
good luck.