after you see your ammonia dropping around 1ppm from the original 5 ppm that you targeted, then its time to start adding a few drops of ammonia daily. keep monitoring ammonia and start monitoring nitrite. when nitrite and ammonia have dropped to 0, AND you've been adding a few drops of ammonia to the tank daily, you should test for nitrates. if theyre higher than 20-40 ppm then do a large water change and add more drops of ammonia. about 2 drops per gallon or so. test the water after a few hours. if ammonia and nitrite is 0 do another identical dose, wait and retest. if you do get a reading then wait until the next day and retest. if you get 0 then next day, and the nitrates are around 20ppm or less, its safe to get fish that day. if you dont go that day then put more drops of ammonia to feed the bacteria for that day.
Test your water the day you plan to get fish (and dont add any ammonia on that day). if all is good, then go get your fish. if nitrates are too high by now, then do another water change(to reduce nitrate) and go get your fish.