I usually go between 30-40mg day of Dbol, and generally start noticing its affects by the 2nd week at the latest. AraTest will take a couple of weeks before really kicking in because it is mostly Enanthate (if you are referring to the 2500).
Remember, you gotta eat unlike you did prior to AS---a LOT more protein, a LOT more calories, and drink 1-1.5 gallons of H20 a day.