Take a look at Kent's site on fishless cycling. It might save you some time with the cycle. He only adds ammonia _once_ to the tank to 5ppm, where others 'feed' ammonia daily - note what he has to say about a 'never ending' cycle.
http://www.angelfire.com/or2/cichlid102/Tank_chemistry/
cycling.htm
The water change at the end of the cycle is to lower the nitrate levels and may take as little as a 10% water change - and as much as a 70% water change.
Add a dechlorinator as your filling the tank from the tap (hose) keeping the tanks water temperature around 78º. Quite a bit of the time, people lose their bio-colonie because they didn't add the fish fast enough, starving the colonie....Frank